/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:55:52,186 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:55:52,189 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:55:52,227 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:55:52,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:55:52,230 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:55:52,231 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:55:52,234 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:55:52,236 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:55:52,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:55:52,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:55:52,240 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:55:52,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:55:52,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:55:52,244 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:55:52,245 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:55:52,246 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:55:52,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:55:52,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:55:52,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:55:52,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:55:52,275 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:55:52,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:55:52,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:55:52,287 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:55:52,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:55:52,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:55:52,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:55:52,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:55:52,296 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:55:52,297 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:55:52,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:55:52,300 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:55:52,301 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:55:52,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:55:52,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:55:52,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:55:52,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:55:52,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:55:52,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:55:52,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:55:52,309 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 04:55:52,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:55:52,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:55:52,378 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:55:52,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:55:52,379 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:55:52,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:55:52,380 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:55:52,380 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:55:52,380 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:55:52,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:55:52,382 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:55:52,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:55:52,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:55:52,383 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:55:52,383 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:55:52,383 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:55:52,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:55:52,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:55:52,384 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:55:52,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:55:52,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:55:52,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:55:52,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:55:52,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:55:52,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:55:52,386 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:55:52,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:55:52,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:55:52,387 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:55:52,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:55:52,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:55:52,886 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:55:52,890 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:55:52,892 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:55:52,892 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:55:52,893 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:55:52,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef5b4a9a9/722f57d2bba2494f8cbd939d310db9c6/FLAG90a5fd172 [2020-10-27 04:55:53,687 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:55:53,687 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:55:53,723 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef5b4a9a9/722f57d2bba2494f8cbd939d310db9c6/FLAG90a5fd172 [2020-10-27 04:55:53,895 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef5b4a9a9/722f57d2bba2494f8cbd939d310db9c6 [2020-10-27 04:55:53,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:55:53,907 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:55:53,911 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:55:53,911 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:55:53,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:55:53,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:55:53" (1/1) ... [2020-10-27 04:55:53,928 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29622ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:53, skipping insertion in model container [2020-10-27 04:55:53,929 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:55:53" (1/1) ... [2020-10-27 04:55:53,940 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:55:54,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:55:54,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:55:54,883 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:55:55,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:55:55,164 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:55:55,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:55 WrapperNode [2020-10-27 04:55:55,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:55:55,167 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:55:55,167 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:55:55,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:55:55,183 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:55" (1/1) ... [2020-10-27 04:55:55,185 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:55" (1/1) ... [2020-10-27 04:55:55,227 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:55" (1/1) ... [2020-10-27 04:55:55,227 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:55" (1/1) ... [2020-10-27 04:55:55,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:55" (1/1) ... [2020-10-27 04:55:55,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:55" (1/1) ... [2020-10-27 04:55:55,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:55" (1/1) ... [2020-10-27 04:55:55,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:55:55,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:55:55,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:55:55,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:55:55,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:55" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:55:55,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:55:55,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:55:55,416 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:55:55,417 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 04:55:55,417 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:55:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:55:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:55:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:55:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:55:55,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-27 04:55:55,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-10-27 04:55:55,419 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-27 04:55:55,419 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-27 04:55:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 04:55:55,420 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-27 04:55:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-27 04:55:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-27 04:55:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-27 04:55:55,421 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-27 04:55:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-27 04:55:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-27 04:55:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:55:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:55:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:55:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:55:55,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:55:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:55:55,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:55:57,354 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:55:57,355 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:55:57,357 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:55:57 BoogieIcfgContainer [2020-10-27 04:55:57,358 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:55:57,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:55:57,360 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:55:57,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:55:57,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:55:53" (1/3) ... [2020-10-27 04:55:57,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c73a576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:55:57, skipping insertion in model container [2020-10-27 04:55:57,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:55:55" (2/3) ... [2020-10-27 04:55:57,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c73a576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:55:57, skipping insertion in model container [2020-10-27 04:55:57,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:55:57" (3/3) ... [2020-10-27 04:55:57,367 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-10-27 04:55:57,379 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:55:57,385 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:55:57,398 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:55:57,429 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:55:57,429 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:55:57,429 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:55:57,429 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:55:57,430 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:55:57,430 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:55:57,430 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:55:57,430 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:55:57,456 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states. [2020-10-27 04:55:57,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-27 04:55:57,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:55:57,475 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] [2020-10-27 04:55:57,476 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:55:57,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:55:57,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1029016139, now seen corresponding path program 1 times [2020-10-27 04:55:57,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:55:57,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491123501] [2020-10-27 04:55:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:55:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:55:58,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:58,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:58,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:59,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:59,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:55:59,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:00,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:01,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:03,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:03,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 04:56:03,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 04:56:03,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 04:56:03,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:03,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:03,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:56:03,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 04:56:03,963 WARN L193 SmtUtils]: Spent 584.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:56:03,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:03,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:04,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:04,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:04,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:04,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 04:56:04,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:04,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:04,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:04,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:04,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:04,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:56:04,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491123501] [2020-10-27 04:56:04,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:04,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:04,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152225271] [2020-10-27 04:56:04,149 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:04,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:04,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:04,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:04,173 INFO L87 Difference]: Start difference. First operand 386 states. Second operand 5 states. [2020-10-27 04:56:07,834 WARN L193 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:56:09,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:09,259 INFO L93 Difference]: Finished difference Result 1086 states and 1975 transitions. [2020-10-27 04:56:09,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:56:09,266 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-27 04:56:09,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:09,287 INFO L225 Difference]: With dead ends: 1086 [2020-10-27 04:56:09,287 INFO L226 Difference]: Without dead ends: 715 [2020-10-27 04:56:09,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 04:56:09,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2020-10-27 04:56:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 692. [2020-10-27 04:56:09,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-27 04:56:09,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 987 transitions. [2020-10-27 04:56:09,415 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 987 transitions. Word has length 143 [2020-10-27 04:56:09,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:09,416 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 987 transitions. [2020-10-27 04:56:09,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 987 transitions. [2020-10-27 04:56:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-10-27 04:56:09,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:09,424 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] [2020-10-27 04:56:09,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:56:09,425 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:09,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:09,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1747194014, now seen corresponding path program 1 times [2020-10-27 04:56:09,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:09,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1298655172] [2020-10-27 04:56:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:09,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:09,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:09,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:09,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:09,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:10,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:10,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:10,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:10,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:11,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:13,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:13,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:14,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:14,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 04:56:14,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 04:56:14,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 04:56:14,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:14,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:14,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:14,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 04:56:14,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:14,995 WARN L193 SmtUtils]: Spent 387.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:56:14,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:15,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:15,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:15,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:15,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:15,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 04:56:15,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:15,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:56:15,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1298655172] [2020-10-27 04:56:15,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:15,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:15,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897518261] [2020-10-27 04:56:15,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:15,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:15,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:15,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:15,107 INFO L87 Difference]: Start difference. First operand 692 states and 987 transitions. Second operand 5 states. [2020-10-27 04:56:17,681 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:56:19,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:19,051 INFO L93 Difference]: Finished difference Result 1997 states and 2836 transitions. [2020-10-27 04:56:19,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:56:19,052 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2020-10-27 04:56:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:19,060 INFO L225 Difference]: With dead ends: 1997 [2020-10-27 04:56:19,061 INFO L226 Difference]: Without dead ends: 1332 [2020-10-27 04:56:19,064 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 [2020-10-27 04:56:19,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1332 states. [2020-10-27 04:56:19,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1332 to 1309. [2020-10-27 04:56:19,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1309 states. [2020-10-27 04:56:19,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1309 states to 1309 states and 1850 transitions. [2020-10-27 04:56:19,155 INFO L78 Accepts]: Start accepts. Automaton has 1309 states and 1850 transitions. Word has length 144 [2020-10-27 04:56:19,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:19,155 INFO L481 AbstractCegarLoop]: Abstraction has 1309 states and 1850 transitions. [2020-10-27 04:56:19,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand 1309 states and 1850 transitions. [2020-10-27 04:56:19,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-27 04:56:19,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:19,161 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] [2020-10-27 04:56:19,161 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:56:19,162 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:19,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:19,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1571620247, now seen corresponding path program 1 times [2020-10-27 04:56:19,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:19,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1769465733] [2020-10-27 04:56:19,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:19,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:20,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:20,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:24,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:24,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 04:56:24,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:56:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 04:56:24,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 04:56:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:24,881 WARN L193 SmtUtils]: Spent 469.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:56:24,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:24,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:24,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:24,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:24,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:24,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:56:24,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:24,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:24,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:24,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:24,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:56:25,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1769465733] [2020-10-27 04:56:25,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:25,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:25,018 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588519661] [2020-10-27 04:56:25,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:25,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:25,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:25,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:25,020 INFO L87 Difference]: Start difference. First operand 1309 states and 1850 transitions. Second operand 5 states. [2020-10-27 04:56:27,873 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:56:29,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:29,341 INFO L93 Difference]: Finished difference Result 3742 states and 5290 transitions. [2020-10-27 04:56:29,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:56:29,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-27 04:56:29,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:29,360 INFO L225 Difference]: With dead ends: 3742 [2020-10-27 04:56:29,361 INFO L226 Difference]: Without dead ends: 2556 [2020-10-27 04:56:29,368 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 [2020-10-27 04:56:29,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2556 states. [2020-10-27 04:56:29,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2556 to 2537. [2020-10-27 04:56:29,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2537 states. [2020-10-27 04:56:29,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 3546 transitions. [2020-10-27 04:56:29,545 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 3546 transitions. Word has length 145 [2020-10-27 04:56:29,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:29,548 INFO L481 AbstractCegarLoop]: Abstraction has 2537 states and 3546 transitions. [2020-10-27 04:56:29,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:29,548 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 3546 transitions. [2020-10-27 04:56:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-27 04:56:29,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:29,556 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] [2020-10-27 04:56:29,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:56:29,556 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:29,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash -1578174685, now seen corresponding path program 1 times [2020-10-27 04:56:29,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:29,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653862181] [2020-10-27 04:56:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:29,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:29,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:29,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:29,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:29,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:29,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:30,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:31,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:31,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:32,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:33,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:34,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:34,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 04:56:34,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 04:56:34,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-27 04:56:34,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:34,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 04:56:34,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:56:35,203 WARN L193 SmtUtils]: Spent 476.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:56:35,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:35,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:35,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:35,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:35,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:35,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:35,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:56:35,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:35,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:35,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:35,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:56:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:56:35,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653862181] [2020-10-27 04:56:35,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:35,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:35,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890631516] [2020-10-27 04:56:35,305 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:35,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:35,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:35,306 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:35,306 INFO L87 Difference]: Start difference. First operand 2537 states and 3546 transitions. Second operand 5 states. [2020-10-27 04:56:38,007 WARN L193 SmtUtils]: Spent 414.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:56:39,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:39,367 INFO L93 Difference]: Finished difference Result 7340 states and 10212 transitions. [2020-10-27 04:56:39,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:56:39,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-10-27 04:56:39,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:39,395 INFO L225 Difference]: With dead ends: 7340 [2020-10-27 04:56:39,395 INFO L226 Difference]: Without dead ends: 4888 [2020-10-27 04:56:39,401 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 [2020-10-27 04:56:39,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4888 states. [2020-10-27 04:56:39,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4888 to 4862. [2020-10-27 04:56:39,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4862 states. [2020-10-27 04:56:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4862 states to 4862 states and 6700 transitions. [2020-10-27 04:56:39,690 INFO L78 Accepts]: Start accepts. Automaton has 4862 states and 6700 transitions. Word has length 146 [2020-10-27 04:56:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:39,691 INFO L481 AbstractCegarLoop]: Abstraction has 4862 states and 6700 transitions. [2020-10-27 04:56:39,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 4862 states and 6700 transitions. [2020-10-27 04:56:39,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-27 04:56:39,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:39,702 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] [2020-10-27 04:56:39,702 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:56:39,702 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:39,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:39,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1871336873, now seen corresponding path program 1 times [2020-10-27 04:56:39,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:39,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835324157] [2020-10-27 04:56:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:39,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:39,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:39,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:39,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:39,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:39,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:40,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:41,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:44,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:44,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 04:56:44,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:56:44,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 04:56:44,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:44,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:56:44,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:56:44,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:56:44,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:45,354 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:56:45,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:45,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:45,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:45,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:45,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:45,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:56:45,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:45,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:45,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:45,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:56:45,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835324157] [2020-10-27 04:56:45,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:45,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:56:45,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567716167] [2020-10-27 04:56:45,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:56:45,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:45,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:56:45,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:56:45,440 INFO L87 Difference]: Start difference. First operand 4862 states and 6700 transitions. Second operand 5 states. [2020-10-27 04:56:48,535 WARN L193 SmtUtils]: Spent 420.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:56:50,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:50,139 INFO L93 Difference]: Finished difference Result 13325 states and 18430 transitions. [2020-10-27 04:56:50,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:56:50,140 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 147 [2020-10-27 04:56:50,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:50,184 INFO L225 Difference]: With dead ends: 13325 [2020-10-27 04:56:50,185 INFO L226 Difference]: Without dead ends: 9403 [2020-10-27 04:56:50,195 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 [2020-10-27 04:56:50,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9403 states. [2020-10-27 04:56:50,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9403 to 9386. [2020-10-27 04:56:50,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9386 states. [2020-10-27 04:56:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9386 states to 9386 states and 12734 transitions. [2020-10-27 04:56:50,891 INFO L78 Accepts]: Start accepts. Automaton has 9386 states and 12734 transitions. Word has length 147 [2020-10-27 04:56:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:56:50,892 INFO L481 AbstractCegarLoop]: Abstraction has 9386 states and 12734 transitions. [2020-10-27 04:56:50,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:56:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 9386 states and 12734 transitions. [2020-10-27 04:56:50,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-27 04:56:50,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:56:50,909 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] [2020-10-27 04:56:50,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:56:50,910 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:56:50,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:56:50,910 INFO L82 PathProgramCache]: Analyzing trace with hash 552033155, now seen corresponding path program 1 times [2020-10-27 04:56:50,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:56:50,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446647930] [2020-10-27 04:56:50,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:56:50,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:50,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:51,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:51,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:51,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:51,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:55,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:55,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-27 04:56:55,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:56:55,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:56:55,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:55,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:56:55,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 04:56:55,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 04:56:55,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:56,362 WARN L193 SmtUtils]: Spent 377.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:56:56,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:56:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:56:56,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:56:56,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:56:56,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:56:56,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:56:56,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:56:56,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:56:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:56:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:56:56,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:56:56,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:56:56,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:56:56,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1446647930] [2020-10-27 04:56:56,410 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:56:56,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 04:56:56,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856211269] [2020-10-27 04:56:56,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 04:56:56,411 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:56:56,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 04:56:56,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:56:56,412 INFO L87 Difference]: Start difference. First operand 9386 states and 12734 transitions. Second operand 4 states. [2020-10-27 04:56:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:56:59,242 INFO L93 Difference]: Finished difference Result 27695 states and 37638 transitions. [2020-10-27 04:56:59,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 04:56:59,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2020-10-27 04:56:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:56:59,307 INFO L225 Difference]: With dead ends: 27695 [2020-10-27 04:56:59,307 INFO L226 Difference]: Without dead ends: 18734 [2020-10-27 04:56:59,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 04:56:59,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18734 states. [2020-10-27 04:57:00,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18734 to 9389. [2020-10-27 04:57:00,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9389 states. [2020-10-27 04:57:00,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9389 states to 9389 states and 12738 transitions. [2020-10-27 04:57:00,136 INFO L78 Accepts]: Start accepts. Automaton has 9389 states and 12738 transitions. Word has length 148 [2020-10-27 04:57:00,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:00,136 INFO L481 AbstractCegarLoop]: Abstraction has 9389 states and 12738 transitions. [2020-10-27 04:57:00,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 04:57:00,136 INFO L276 IsEmpty]: Start isEmpty. Operand 9389 states and 12738 transitions. [2020-10-27 04:57:00,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:57:00,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:00,154 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] [2020-10-27 04:57:00,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:57:00,154 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:00,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:00,155 INFO L82 PathProgramCache]: Analyzing trace with hash 587072189, now seen corresponding path program 1 times [2020-10-27 04:57:00,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:00,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070345946] [2020-10-27 04:57:00,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:00,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:00,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:00,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:00,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:00,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:00,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:05,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:05,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 04:57:05,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:57:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:57:05,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:57:05,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 04:57:05,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:05,677 WARN L193 SmtUtils]: Spent 359.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:57:05,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:05,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:05,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:05,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:05,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:05,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:57:05,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:05,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:05,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:57:05,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070345946] [2020-10-27 04:57:05,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:05,763 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:05,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738539281] [2020-10-27 04:57:05,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:05,764 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:05,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:05,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:05,765 INFO L87 Difference]: Start difference. First operand 9389 states and 12738 transitions. Second operand 5 states. [2020-10-27 04:57:09,097 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:11,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:11,059 INFO L93 Difference]: Finished difference Result 26642 states and 36228 transitions. [2020-10-27 04:57:11,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:57:11,060 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 04:57:11,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:11,103 INFO L225 Difference]: With dead ends: 26642 [2020-10-27 04:57:11,103 INFO L226 Difference]: Without dead ends: 18352 [2020-10-27 04:57:11,125 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 [2020-10-27 04:57:11,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18352 states. [2020-10-27 04:57:12,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18352 to 18318. [2020-10-27 04:57:12,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18318 states. [2020-10-27 04:57:12,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18318 states to 18318 states and 24532 transitions. [2020-10-27 04:57:12,579 INFO L78 Accepts]: Start accepts. Automaton has 18318 states and 24532 transitions. Word has length 149 [2020-10-27 04:57:12,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:12,580 INFO L481 AbstractCegarLoop]: Abstraction has 18318 states and 24532 transitions. [2020-10-27 04:57:12,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:12,580 INFO L276 IsEmpty]: Start isEmpty. Operand 18318 states and 24532 transitions. [2020-10-27 04:57:12,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-27 04:57:12,608 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:12,608 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] [2020-10-27 04:57:12,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:57:12,608 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:12,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:12,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1148746312, now seen corresponding path program 1 times [2020-10-27 04:57:12,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:12,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541834268] [2020-10-27 04:57:12,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:12,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:12,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:12,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:12,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:12,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:12,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:17,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:17,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-27 04:57:17,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:57:17,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:57:17,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 04:57:17,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 04:57:17,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:18,126 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:57:18,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:18,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:18,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:18,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:18,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:18,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:57:18,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:18,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:18,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:18,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:57:18,184 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541834268] [2020-10-27 04:57:18,184 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:18,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:18,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108179377] [2020-10-27 04:57:18,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:18,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:18,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:18,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:18,186 INFO L87 Difference]: Start difference. First operand 18318 states and 24532 transitions. Second operand 5 states. [2020-10-27 04:57:21,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:21,037 INFO L93 Difference]: Finished difference Result 29941 states and 40038 transitions. [2020-10-27 04:57:21,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:57:21,037 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2020-10-27 04:57:21,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:21,067 INFO L225 Difference]: With dead ends: 29941 [2020-10-27 04:57:21,067 INFO L226 Difference]: Without dead ends: 11731 [2020-10-27 04:57:21,101 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 [2020-10-27 04:57:21,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11731 states. [2020-10-27 04:57:22,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11731 to 11731. [2020-10-27 04:57:22,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11731 states. [2020-10-27 04:57:22,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11731 states to 11731 states and 15650 transitions. [2020-10-27 04:57:22,063 INFO L78 Accepts]: Start accepts. Automaton has 11731 states and 15650 transitions. Word has length 149 [2020-10-27 04:57:22,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:22,063 INFO L481 AbstractCegarLoop]: Abstraction has 11731 states and 15650 transitions. [2020-10-27 04:57:22,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:22,063 INFO L276 IsEmpty]: Start isEmpty. Operand 11731 states and 15650 transitions. [2020-10-27 04:57:22,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-27 04:57:22,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:22,080 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] [2020-10-27 04:57:22,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:57:22,080 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:22,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:22,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1015981896, now seen corresponding path program 1 times [2020-10-27 04:57:22,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:22,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59012508] [2020-10-27 04:57:22,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:22,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:22,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:22,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:22,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:22,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:22,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:22,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:27,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:27,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-10-27 04:57:27,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:57:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 04:57:27,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:57:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 04:57:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 04:57:27,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:27,608 WARN L193 SmtUtils]: Spent 393.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:57:27,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:27,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:27,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:27,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:27,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:27,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 04:57:27,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:57:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:27,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:57:27,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:57:27,663 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59012508] [2020-10-27 04:57:27,663 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:27,663 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:57:27,663 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705109265] [2020-10-27 04:57:27,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:57:27,664 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:27,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:57:27,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:57:27,665 INFO L87 Difference]: Start difference. First operand 11731 states and 15650 transitions. Second operand 5 states. [2020-10-27 04:57:30,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:30,245 INFO L93 Difference]: Finished difference Result 21025 states and 28058 transitions. [2020-10-27 04:57:30,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:57:30,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-27 04:57:30,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:30,265 INFO L225 Difference]: With dead ends: 21025 [2020-10-27 04:57:30,265 INFO L226 Difference]: Without dead ends: 9512 [2020-10-27 04:57:30,288 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 [2020-10-27 04:57:30,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9512 states. [2020-10-27 04:57:31,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9512 to 9512. [2020-10-27 04:57:31,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9512 states. [2020-10-27 04:57:31,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9512 states to 9512 states and 12663 transitions. [2020-10-27 04:57:31,077 INFO L78 Accepts]: Start accepts. Automaton has 9512 states and 12663 transitions. Word has length 154 [2020-10-27 04:57:31,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:31,078 INFO L481 AbstractCegarLoop]: Abstraction has 9512 states and 12663 transitions. [2020-10-27 04:57:31,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:57:31,078 INFO L276 IsEmpty]: Start isEmpty. Operand 9512 states and 12663 transitions. [2020-10-27 04:57:31,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 04:57:31,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:31,087 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] [2020-10-27 04:57:31,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:57:31,087 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:31,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:31,088 INFO L82 PathProgramCache]: Analyzing trace with hash -94523996, now seen corresponding path program 1 times [2020-10-27 04:57:31,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:31,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591949308] [2020-10-27 04:57:31,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:31,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:31,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:31,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:31,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:31,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:31,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:31,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:36,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:36,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 04:57:36,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:57:36,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 04:57:36,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:36,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:57:36,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:57:36,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 04:57:36,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:36,717 WARN L193 SmtUtils]: Spent 364.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:57:36,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:36,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:36,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:36,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:36,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:36,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 04:57:36,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:57:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:36,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:57:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:36,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:57:36,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591949308] [2020-10-27 04:57:36,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:36,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-27 04:57:36,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634144510] [2020-10-27 04:57:36,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:57:36,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:36,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:57:36,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:57:36,828 INFO L87 Difference]: Start difference. First operand 9512 states and 12663 transitions. Second operand 11 states. [2020-10-27 04:57:37,391 WARN L193 SmtUtils]: Spent 433.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:40,589 WARN L193 SmtUtils]: Spent 436.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:57:41,103 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-27 04:57:43,696 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-27 04:57:44,214 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 04:57:45,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:57:45,790 INFO L93 Difference]: Finished difference Result 40028 states and 57588 transitions. [2020-10-27 04:57:45,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 04:57:45,791 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 157 [2020-10-27 04:57:45,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:57:45,839 INFO L225 Difference]: With dead ends: 40028 [2020-10-27 04:57:45,839 INFO L226 Difference]: Without dead ends: 32510 [2020-10-27 04:57:45,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=277, Invalid=715, Unknown=0, NotChecked=0, Total=992 [2020-10-27 04:57:45,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32510 states. [2020-10-27 04:57:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32510 to 13492. [2020-10-27 04:57:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13492 states. [2020-10-27 04:57:47,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13492 states to 13492 states and 18205 transitions. [2020-10-27 04:57:47,257 INFO L78 Accepts]: Start accepts. Automaton has 13492 states and 18205 transitions. Word has length 157 [2020-10-27 04:57:47,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:57:47,257 INFO L481 AbstractCegarLoop]: Abstraction has 13492 states and 18205 transitions. [2020-10-27 04:57:47,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:57:47,257 INFO L276 IsEmpty]: Start isEmpty. Operand 13492 states and 18205 transitions. [2020-10-27 04:57:47,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 04:57:47,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:57:47,276 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] [2020-10-27 04:57:47,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:57:47,276 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:57:47,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:57:47,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1696473411, now seen corresponding path program 1 times [2020-10-27 04:57:47,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:57:47,278 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416645027] [2020-10-27 04:57:47,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:57:47,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:47,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:47,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:47,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:47,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:47,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:47,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:51,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:52,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:52,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 04:57:52,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 04:57:52,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 04:57:52,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:57:52,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:57:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-27 04:57:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:52,898 WARN L193 SmtUtils]: Spent 398.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:57:52,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:57:52,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:57:52,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:57:52,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:57:52,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:57:52,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:57:52,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 04:57:52,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:57:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:57:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:57:52,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:57:52,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:57:53,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:57:53,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416645027] [2020-10-27 04:57:53,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:57:53,078 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 04:57:53,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158820143] [2020-10-27 04:57:53,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:57:53,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:57:53,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:57:53,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:57:53,080 INFO L87 Difference]: Start difference. First operand 13492 states and 18205 transitions. Second operand 10 states. [2020-10-27 04:57:53,572 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification that was a NOOP. DAG size: 223 [2020-10-27 04:57:56,577 WARN L193 SmtUtils]: Spent 466.00 ms on a formula simplification that was a NOOP. DAG size: 229 [2020-10-27 04:57:57,094 WARN L193 SmtUtils]: Spent 441.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 04:57:57,679 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-27 04:58:00,981 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-27 04:58:02,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:02,365 INFO L93 Difference]: Finished difference Result 47912 states and 67930 transitions. [2020-10-27 04:58:02,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:58:02,367 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 157 [2020-10-27 04:58:02,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:02,415 INFO L225 Difference]: With dead ends: 47912 [2020-10-27 04:58:02,415 INFO L226 Difference]: Without dead ends: 37508 [2020-10-27 04:58:02,429 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=187, Invalid=365, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:58:02,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37508 states. [2020-10-27 04:58:05,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37508 to 29216. [2020-10-27 04:58:05,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29216 states. [2020-10-27 04:58:05,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29216 states to 29216 states and 40365 transitions. [2020-10-27 04:58:05,392 INFO L78 Accepts]: Start accepts. Automaton has 29216 states and 40365 transitions. Word has length 157 [2020-10-27 04:58:05,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:05,392 INFO L481 AbstractCegarLoop]: Abstraction has 29216 states and 40365 transitions. [2020-10-27 04:58:05,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:58:05,392 INFO L276 IsEmpty]: Start isEmpty. Operand 29216 states and 40365 transitions. [2020-10-27 04:58:05,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 04:58:05,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:05,406 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] [2020-10-27 04:58:05,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:58:05,407 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:05,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:05,407 INFO L82 PathProgramCache]: Analyzing trace with hash 555151447, now seen corresponding path program 1 times [2020-10-27 04:58:05,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:05,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251743160] [2020-10-27 04:58:05,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:05,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:05,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:05,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:09,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:09,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:09,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:10,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 04:58:10,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:58:10,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 04:58:10,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:10,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:58:10,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:58:10,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-27 04:58:10,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:10,924 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:58:10,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:10,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:10,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:10,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:10,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:10,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:58:10,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:10,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:58:10,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:10,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:58:10,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:11,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:58:11,024 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251743160] [2020-10-27 04:58:11,025 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:11,025 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:11,025 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306337794] [2020-10-27 04:58:11,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:58:11,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:11,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:58:11,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:58:11,026 INFO L87 Difference]: Start difference. First operand 29216 states and 40365 transitions. Second operand 6 states. [2020-10-27 04:58:11,507 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification that was a NOOP. DAG size: 222 [2020-10-27 04:58:14,569 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 224 [2020-10-27 04:58:19,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:19,097 INFO L93 Difference]: Finished difference Result 69452 states and 99039 transitions. [2020-10-27 04:58:19,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:58:19,097 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-10-27 04:58:19,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:19,166 INFO L225 Difference]: With dead ends: 69452 [2020-10-27 04:58:19,166 INFO L226 Difference]: Without dead ends: 53032 [2020-10-27 04:58:19,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:58:19,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53032 states. [2020-10-27 04:58:24,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53032 to 53026. [2020-10-27 04:58:24,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53026 states. [2020-10-27 04:58:24,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53026 states to 53026 states and 73899 transitions. [2020-10-27 04:58:24,819 INFO L78 Accepts]: Start accepts. Automaton has 53026 states and 73899 transitions. Word has length 157 [2020-10-27 04:58:24,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:24,819 INFO L481 AbstractCegarLoop]: Abstraction has 53026 states and 73899 transitions. [2020-10-27 04:58:24,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:58:24,820 INFO L276 IsEmpty]: Start isEmpty. Operand 53026 states and 73899 transitions. [2020-10-27 04:58:24,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-27 04:58:24,840 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:24,840 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] [2020-10-27 04:58:24,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:58:24,840 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:24,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:24,841 INFO L82 PathProgramCache]: Analyzing trace with hash -80733812, now seen corresponding path program 1 times [2020-10-27 04:58:24,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:24,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267075045] [2020-10-27 04:58:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:24,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:24,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:24,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:24,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:24,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:25,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:25,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:29,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:29,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 04:58:29,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 04:58:29,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 04:58:29,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:29,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 04:58:29,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 04:58:29,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:58:29,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:30,353 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:58:30,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:30,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:30,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:30,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:30,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:30,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:30,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:58:30,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:58:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:30,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:58:30,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:30,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:58:30,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267075045] [2020-10-27 04:58:30,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:30,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 04:58:30,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040218310] [2020-10-27 04:58:30,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 04:58:30,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:30,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 04:58:30,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 04:58:30,402 INFO L87 Difference]: Start difference. First operand 53026 states and 73899 transitions. Second operand 5 states. [2020-10-27 04:58:35,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:35,909 INFO L93 Difference]: Finished difference Result 88295 states and 122628 transitions. [2020-10-27 04:58:35,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 04:58:35,910 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2020-10-27 04:58:35,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:35,956 INFO L225 Difference]: With dead ends: 88295 [2020-10-27 04:58:35,956 INFO L226 Difference]: Without dead ends: 35346 [2020-10-27 04:58:36,127 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 [2020-10-27 04:58:36,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35346 states. [2020-10-27 04:58:39,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35346 to 35346. [2020-10-27 04:58:39,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35346 states. [2020-10-27 04:58:39,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35346 states to 35346 states and 48826 transitions. [2020-10-27 04:58:39,742 INFO L78 Accepts]: Start accepts. Automaton has 35346 states and 48826 transitions. Word has length 157 [2020-10-27 04:58:39,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:58:39,742 INFO L481 AbstractCegarLoop]: Abstraction has 35346 states and 48826 transitions. [2020-10-27 04:58:39,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 04:58:39,743 INFO L276 IsEmpty]: Start isEmpty. Operand 35346 states and 48826 transitions. [2020-10-27 04:58:39,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 04:58:39,759 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:58:39,759 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] [2020-10-27 04:58:39,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:58:39,759 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:58:39,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:58:39,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1526601070, now seen corresponding path program 1 times [2020-10-27 04:58:39,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:58:39,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1981688702] [2020-10-27 04:58:39,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:58:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:39,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:39,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:39,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:39,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:40,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:40,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:41,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:41,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:42,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:42,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:44,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:44,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 04:58:44,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 04:58:44,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 04:58:44,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:58:44,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 04:58:44,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 04:58:44,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:58:45,421 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:58:45,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:58:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:58:45,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:58:45,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:58:45,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:58:45,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:58:45,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:58:45,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:58:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 04:58:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:58:45,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 04:58:45,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:58:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:58:45,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1981688702] [2020-10-27 04:58:45,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:58:45,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:58:45,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816572206] [2020-10-27 04:58:45,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:58:45,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:58:45,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:58:45,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:58:45,513 INFO L87 Difference]: Start difference. First operand 35346 states and 48826 transitions. Second operand 12 states. [2020-10-27 04:58:46,007 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 04:58:50,950 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 221 [2020-10-27 04:58:51,567 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 227 [2020-10-27 04:58:56,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:58:56,834 INFO L93 Difference]: Finished difference Result 65347 states and 91299 transitions. [2020-10-27 04:58:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:58:56,835 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 165 [2020-10-27 04:58:56,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:58:56,885 INFO L225 Difference]: With dead ends: 65347 [2020-10-27 04:58:56,885 INFO L226 Difference]: Without dead ends: 35233 [2020-10-27 04:58:56,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:58:56,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35233 states. [2020-10-27 04:59:00,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35233 to 35196. [2020-10-27 04:59:00,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35196 states. [2020-10-27 04:59:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35196 states to 35196 states and 48522 transitions. [2020-10-27 04:59:00,537 INFO L78 Accepts]: Start accepts. Automaton has 35196 states and 48522 transitions. Word has length 165 [2020-10-27 04:59:00,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:59:00,537 INFO L481 AbstractCegarLoop]: Abstraction has 35196 states and 48522 transitions. [2020-10-27 04:59:00,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:59:00,537 INFO L276 IsEmpty]: Start isEmpty. Operand 35196 states and 48522 transitions. [2020-10-27 04:59:00,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 04:59:00,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:59:00,552 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] [2020-10-27 04:59:00,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:59:00,552 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:59:00,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:59:00,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1091817850, now seen corresponding path program 1 times [2020-10-27 04:59:00,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:59:00,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [589540607] [2020-10-27 04:59:00,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:59:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:00,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:00,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:00,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:03,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:05,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:05,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-27 04:59:05,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 04:59:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 04:59:05,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:59:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:59:05,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-27 04:59:05,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:06,325 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification that was a NOOP. DAG size: 217 [2020-10-27 04:59:06,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:59:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:59:06,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:59:06,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:59:06,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:59:06,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:59:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:59:06,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:59:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:59:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:59:06,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:59:06,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:59:06,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 04:59:06,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [589540607] [2020-10-27 04:59:06,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:59:06,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-27 04:59:06,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799603084] [2020-10-27 04:59:06,433 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:59:06,433 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:59:06,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:59:06,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:59:06,434 INFO L87 Difference]: Start difference. First operand 35196 states and 48522 transitions. Second operand 11 states. [2020-10-27 04:59:06,934 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 225 [2020-10-27 04:59:12,767 WARN L193 SmtUtils]: Spent 481.00 ms on a formula simplification that was a NOOP. DAG size: 239 [2020-10-27 04:59:13,298 WARN L193 SmtUtils]: Spent 474.00 ms on a formula simplification that was a NOOP. DAG size: 235 [2020-10-27 04:59:13,794 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification that was a NOOP. DAG size: 230 [2020-10-27 04:59:14,886 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification that was a NOOP. DAG size: 234