/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:52:54,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:52:54,125 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:52:54,163 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:52:54,164 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:52:54,166 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:52:54,168 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:52:54,170 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:52:54,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:52:54,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:52:54,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:52:54,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:52:54,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:52:54,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:52:54,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:52:54,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:52:54,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:52:54,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:52:54,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:52:54,189 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:52:54,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:52:54,195 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:52:54,196 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:52:54,198 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:52:54,218 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:52:54,218 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:52:54,219 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:52:54,226 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:52:54,226 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:52:54,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:52:54,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:52:54,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:52:54,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:52:54,236 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:52:54,238 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:52:54,239 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:52:54,240 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:52:54,240 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:52:54,240 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:52:54,242 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:52:54,243 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:52:54,245 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 06:52:54,301 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:52:54,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:52:54,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:52:54,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:52:54,307 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:52:54,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:52:54,307 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:52:54,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:52:54,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:52:54,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:52:54,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:52:54,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:52:54,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:52:54,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:52:54,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:52:54,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:52:54,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:52:54,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:52:54,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:52:54,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:52:54,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:52:54,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:52:54,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:52:54,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:52:54,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:52:54,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:52:54,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:52:54,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:52:54,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:52:54,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:52:54,760 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:52:54,800 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:52:54,804 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:52:54,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:52:54,806 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:52:54,808 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label57.c [2020-10-29 06:52:54,903 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ae79de56/e1362540ea6541b787ecbc2aa2e1d289/FLAGb55330566 [2020-10-29 06:52:55,827 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:52:55,828 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label57.c [2020-10-29 06:52:55,856 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ae79de56/e1362540ea6541b787ecbc2aa2e1d289/FLAGb55330566 [2020-10-29 06:52:56,056 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5ae79de56/e1362540ea6541b787ecbc2aa2e1d289 [2020-10-29 06:52:56,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:52:56,076 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:52:56,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:52:56,081 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:52:56,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:52:56,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:52:56" (1/1) ... [2020-10-29 06:52:56,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@522b80ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:52:56, skipping insertion in model container [2020-10-29 06:52:56,094 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:52:56" (1/1) ... [2020-10-29 06:52:56,104 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:52:56,189 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:52:56,778 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:52:56,790 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:52:57,068 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:52:57,090 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:52:57,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:52:57 WrapperNode [2020-10-29 06:52:57,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:52:57,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:52:57,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:52:57,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:52:57,112 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:52:57" (1/1) ... [2020-10-29 06:52:57,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:52:57" (1/1) ... [2020-10-29 06:52:57,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:52:57" (1/1) ... [2020-10-29 06:52:57,165 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:52:57" (1/1) ... [2020-10-29 06:52:57,246 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:52:57" (1/1) ... [2020-10-29 06:52:57,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:52:57" (1/1) ... [2020-10-29 06:52:57,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:52:57" (1/1) ... [2020-10-29 06:52:57,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:52:57,304 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:52:57,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:52:57,305 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:52:57,306 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:52:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:52:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:52:57,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:52:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:52:57,398 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:52:57,399 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:52:57,399 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:52:57,400 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:52:57,400 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:52:57,400 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:52:57,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:52:57,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:52:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:52:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:52:57,402 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:52:57,403 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:52:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:52:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:52:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:52:57,404 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:53:00,115 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:53:00,115 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:53:00,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:53:00 BoogieIcfgContainer [2020-10-29 06:53:00,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:53:00,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:53:00,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:53:00,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:53:00,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:52:56" (1/3) ... [2020-10-29 06:53:00,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff404f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:53:00, skipping insertion in model container [2020-10-29 06:53:00,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:52:57" (2/3) ... [2020-10-29 06:53:00,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ff404f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:53:00, skipping insertion in model container [2020-10-29 06:53:00,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:53:00" (3/3) ... [2020-10-29 06:53:00,129 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label57.c [2020-10-29 06:53:00,143 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:53:00,149 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:53:00,165 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:53:00,199 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:53:00,199 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:53:00,199 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:53:00,199 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:53:00,199 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:53:00,200 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:53:00,200 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:53:00,200 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:53:00,230 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-29 06:53:00,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 06:53:00,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:00,241 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] [2020-10-29 06:53:00,242 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:00,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:00,249 INFO L82 PathProgramCache]: Analyzing trace with hash -1488738090, now seen corresponding path program 1 times [2020-10-29 06:53:00,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:00,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1289882002] [2020-10-29 06:53:00,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:01,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:01,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 06:53:01,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:01,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 697 [2020-10-29 06:53:01,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:01,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:53:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:53:01,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 06:53:01,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 06:53:01,451 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 06:53:01,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:01,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:01,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:01,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:01,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:01,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:53:01,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:01,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:01,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:53:01,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:01,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:53:01,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1289882002] [2020-10-29 06:53:01,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:53:01,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 06:53:01,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080171372] [2020-10-29 06:53:01,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:53:01,533 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:01,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:53:01,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:53:01,554 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-29 06:53:06,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:06,542 INFO L93 Difference]: Finished difference Result 997 states and 1783 transitions. [2020-10-29 06:53:06,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:53:06,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-10-29 06:53:06,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:06,575 INFO L225 Difference]: With dead ends: 997 [2020-10-29 06:53:06,575 INFO L226 Difference]: Without dead ends: 631 [2020-10-29 06:53:06,585 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:06,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 631 states. [2020-10-29 06:53:06,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 631 to 625. [2020-10-29 06:53:06,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2020-10-29 06:53:06,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 865 transitions. [2020-10-29 06:53:06,693 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 865 transitions. Word has length 53 [2020-10-29 06:53:06,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:06,693 INFO L481 AbstractCegarLoop]: Abstraction has 625 states and 865 transitions. [2020-10-29 06:53:06,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:53:06,694 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 865 transitions. [2020-10-29 06:53:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-29 06:53:06,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:06,701 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:06,701 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:53:06,701 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:06,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:06,702 INFO L82 PathProgramCache]: Analyzing trace with hash -1725347365, now seen corresponding path program 1 times [2020-10-29 06:53:06,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:06,703 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181351096] [2020-10-29 06:53:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:06,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:06,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:08,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:08,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 06:53:08,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:08,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2177 [2020-10-29 06:53:08,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:08,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:08,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:53:08,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:53:08,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 06:53:08,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:09,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:09,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:09,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:09,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:09,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:09,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:09,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 06:53:09,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:09,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:09,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:53:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:09,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:09,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:09,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:09,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:53:09,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:09,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-29 06:53:09,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:09,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:09,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:09,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 06:53:09,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:09,547 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:53:09,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181351096] [2020-10-29 06:53:09,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:53:09,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:53:09,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475377030] [2020-10-29 06:53:09,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:09,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:09,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:09,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:09,559 INFO L87 Difference]: Start difference. First operand 625 states and 865 transitions. Second operand 7 states. [2020-10-29 06:53:13,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:13,027 INFO L93 Difference]: Finished difference Result 1873 states and 2658 transitions. [2020-10-29 06:53:13,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:53:13,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-10-29 06:53:13,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:13,040 INFO L225 Difference]: With dead ends: 1873 [2020-10-29 06:53:13,040 INFO L226 Difference]: Without dead ends: 1254 [2020-10-29 06:53:13,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:13,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1254 states. [2020-10-29 06:53:13,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1254 to 1216. [2020-10-29 06:53:13,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-10-29 06:53:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1619 transitions. [2020-10-29 06:53:13,122 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1619 transitions. Word has length 125 [2020-10-29 06:53:13,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:13,122 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1619 transitions. [2020-10-29 06:53:13,123 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:13,123 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1619 transitions. [2020-10-29 06:53:13,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 06:53:13,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:13,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:13,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:53:13,127 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:13,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:13,128 INFO L82 PathProgramCache]: Analyzing trace with hash 754944159, now seen corresponding path program 1 times [2020-10-29 06:53:13,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:13,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [280530794] [2020-10-29 06:53:13,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:13,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:13,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:13,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:15,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:15,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-29 06:53:15,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:15,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2062 [2020-10-29 06:53:15,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:15,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:15,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:53:15,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:53:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 06:53:15,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:15,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:15,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:15,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:15,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:15,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:15,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 06:53:15,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:15,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:15,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:53:15,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:15,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:15,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:15,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:15,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:53:15,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 06:53:15,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:15,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:53:15,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:15,854 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:53:15,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [280530794] [2020-10-29 06:53:15,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:53:15,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:53:15,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876062821] [2020-10-29 06:53:15,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:15,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:15,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:15,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:15,862 INFO L87 Difference]: Start difference. First operand 1216 states and 1619 transitions. Second operand 7 states. [2020-10-29 06:53:19,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:19,260 INFO L93 Difference]: Finished difference Result 3060 states and 4060 transitions. [2020-10-29 06:53:19,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:53:19,261 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-29 06:53:19,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:19,276 INFO L225 Difference]: With dead ends: 3060 [2020-10-29 06:53:19,276 INFO L226 Difference]: Without dead ends: 1850 [2020-10-29 06:53:19,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:53:19,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1850 states. [2020-10-29 06:53:19,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1850 to 1817. [2020-10-29 06:53:19,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1817 states. [2020-10-29 06:53:19,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1817 states to 1817 states and 2291 transitions. [2020-10-29 06:53:19,373 INFO L78 Accepts]: Start accepts. Automaton has 1817 states and 2291 transitions. Word has length 127 [2020-10-29 06:53:19,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:19,376 INFO L481 AbstractCegarLoop]: Abstraction has 1817 states and 2291 transitions. [2020-10-29 06:53:19,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:19,377 INFO L276 IsEmpty]: Start isEmpty. Operand 1817 states and 2291 transitions. [2020-10-29 06:53:19,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-10-29 06:53:19,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:19,393 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:19,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:53:19,394 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:19,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:19,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1027253090, now seen corresponding path program 1 times [2020-10-29 06:53:19,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:19,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412010993] [2020-10-29 06:53:19,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:20,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-29 06:53:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-10-29 06:53:20,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:20,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:53:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 06:53:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:20,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:20,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:20,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:20,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:20,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:20,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:20,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:53:20,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:20,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:20,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:20,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:20,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:20,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:20,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:20,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:20,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:53:20,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:20,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 06:53:20,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:20,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:20,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:53:20,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:20,574 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 44 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:53:20,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412010993] [2020-10-29 06:53:20,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:20,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:53:20,575 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615738202] [2020-10-29 06:53:20,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:53:20,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:20,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:53:20,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:53:20,578 INFO L87 Difference]: Start difference. First operand 1817 states and 2291 transitions. Second operand 5 states. [2020-10-29 06:53:23,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:23,549 INFO L93 Difference]: Finished difference Result 3275 states and 4364 transitions. [2020-10-29 06:53:23,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:53:23,554 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 184 [2020-10-29 06:53:23,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:23,568 INFO L225 Difference]: With dead ends: 3275 [2020-10-29 06:53:23,568 INFO L226 Difference]: Without dead ends: 2238 [2020-10-29 06:53:23,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:53:23,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2238 states. [2020-10-29 06:53:23,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2238 to 2224. [2020-10-29 06:53:23,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2224 states. [2020-10-29 06:53:23,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2224 states to 2224 states and 2879 transitions. [2020-10-29 06:53:23,645 INFO L78 Accepts]: Start accepts. Automaton has 2224 states and 2879 transitions. Word has length 184 [2020-10-29 06:53:23,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:23,646 INFO L481 AbstractCegarLoop]: Abstraction has 2224 states and 2879 transitions. [2020-10-29 06:53:23,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:53:23,646 INFO L276 IsEmpty]: Start isEmpty. Operand 2224 states and 2879 transitions. [2020-10-29 06:53:23,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-29 06:53:23,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:23,652 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:23,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:53:23,652 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:23,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:23,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1684312074, now seen corresponding path program 1 times [2020-10-29 06:53:23,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:23,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567623920] [2020-10-29 06:53:23,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:23,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:23,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:23,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:24,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:25,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:25,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 257 [2020-10-29 06:53:25,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:53:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2229 [2020-10-29 06:53:25,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:25,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:53:25,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 06:53:25,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:26,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:26,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:26,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:26,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:26,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:26,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:53:26,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:26,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:26,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:26,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:26,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:26,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:26,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:26,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:26,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:26,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:26,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:53:26,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:26,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 06:53:26,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:26,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:26,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:53:26,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:26,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:53:26,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:26,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:26,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:26,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:53:26,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:26,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 06:53:26,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:26,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:26,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:26,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:26,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 06:53:26,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:26,881 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 161 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:53:26,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567623920] [2020-10-29 06:53:26,882 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:26,882 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:26,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837089130] [2020-10-29 06:53:26,883 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:26,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:26,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:26,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:26,885 INFO L87 Difference]: Start difference. First operand 2224 states and 2879 transitions. Second operand 7 states. [2020-10-29 06:53:30,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:30,414 INFO L93 Difference]: Finished difference Result 5456 states and 7284 transitions. [2020-10-29 06:53:30,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 06:53:30,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 243 [2020-10-29 06:53:30,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:30,436 INFO L225 Difference]: With dead ends: 5456 [2020-10-29 06:53:30,436 INFO L226 Difference]: Without dead ends: 3616 [2020-10-29 06:53:30,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:53:30,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3616 states. [2020-10-29 06:53:30,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3616 to 3590. [2020-10-29 06:53:30,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3590 states. [2020-10-29 06:53:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3590 states to 3590 states and 4443 transitions. [2020-10-29 06:53:30,552 INFO L78 Accepts]: Start accepts. Automaton has 3590 states and 4443 transitions. Word has length 243 [2020-10-29 06:53:30,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:30,553 INFO L481 AbstractCegarLoop]: Abstraction has 3590 states and 4443 transitions. [2020-10-29 06:53:30,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:30,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3590 states and 4443 transitions. [2020-10-29 06:53:30,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-29 06:53:30,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:30,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:30,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:53:30,559 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:30,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:30,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1709731818, now seen corresponding path program 1 times [2020-10-29 06:53:30,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:30,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757559616] [2020-10-29 06:53:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:30,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:30,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:30,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:31,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:32,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:33,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:33,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-29 06:53:33,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:53:33,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2947 [2020-10-29 06:53:33,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:33,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:33,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:53:33,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-29 06:53:33,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-29 06:53:33,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:33,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:33,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:33,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:33,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:33,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:33,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:33,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:53:33,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:33,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:33,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:33,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:33,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:33,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:33,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:33,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:53:33,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:33,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 06:53:33,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:33,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:33,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:53:33,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:33,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:53:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:34,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:34,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:34,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 06:53:34,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:34,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 06:53:34,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:34,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:34,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:34,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 06:53:34,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:34,354 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 120 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 06:53:34,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757559616] [2020-10-29 06:53:34,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:34,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:53:34,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834239336] [2020-10-29 06:53:34,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:53:34,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:34,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:53:34,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:53:34,360 INFO L87 Difference]: Start difference. First operand 3590 states and 4443 transitions. Second operand 6 states. [2020-10-29 06:53:38,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:38,039 INFO L93 Difference]: Finished difference Result 8594 states and 11110 transitions. [2020-10-29 06:53:38,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:53:38,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 249 [2020-10-29 06:53:38,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:38,074 INFO L225 Difference]: With dead ends: 8594 [2020-10-29 06:53:38,075 INFO L226 Difference]: Without dead ends: 5388 [2020-10-29 06:53:38,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:53:38,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5388 states. [2020-10-29 06:53:38,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5388 to 5173. [2020-10-29 06:53:38,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5173 states. [2020-10-29 06:53:38,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5173 states to 5173 states and 6626 transitions. [2020-10-29 06:53:38,261 INFO L78 Accepts]: Start accepts. Automaton has 5173 states and 6626 transitions. Word has length 249 [2020-10-29 06:53:38,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:38,262 INFO L481 AbstractCegarLoop]: Abstraction has 5173 states and 6626 transitions. [2020-10-29 06:53:38,262 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:53:38,262 INFO L276 IsEmpty]: Start isEmpty. Operand 5173 states and 6626 transitions. [2020-10-29 06:53:38,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-29 06:53:38,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:38,270 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:38,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:53:38,270 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:38,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:38,271 INFO L82 PathProgramCache]: Analyzing trace with hash 2117509150, now seen corresponding path program 1 times [2020-10-29 06:53:38,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:38,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087592503] [2020-10-29 06:53:38,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:38,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:38,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:39,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:39,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-29 06:53:39,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:53:39,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1038 [2020-10-29 06:53:39,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:39,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:53:39,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 06:53:39,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:39,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:39,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:39,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:39,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:39,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:39,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:39,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:53:39,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:39,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:39,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:39,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:39,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:39,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:39,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:39,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:39,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:39,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:53:39,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:39,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 06:53:39,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:39,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:39,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:39,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:39,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:39,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:53:39,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:39,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:39,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:39,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:53:39,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-29 06:53:39,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:39,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:39,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:53:39,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:39,869 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 06:53:39,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087592503] [2020-10-29 06:53:39,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:39,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:53:39,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957241384] [2020-10-29 06:53:39,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:53:39,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:39,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:53:39,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:53:39,873 INFO L87 Difference]: Start difference. First operand 5173 states and 6626 transitions. Second operand 5 states. [2020-10-29 06:53:43,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:43,205 INFO L93 Difference]: Finished difference Result 11530 states and 15180 transitions. [2020-10-29 06:53:43,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:53:43,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 253 [2020-10-29 06:53:43,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:43,248 INFO L225 Difference]: With dead ends: 11530 [2020-10-29 06:53:43,249 INFO L226 Difference]: Without dead ends: 6741 [2020-10-29 06:53:43,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:53:43,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6741 states. [2020-10-29 06:53:43,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6741 to 6529. [2020-10-29 06:53:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6529 states. [2020-10-29 06:53:43,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6529 states to 6529 states and 8358 transitions. [2020-10-29 06:53:43,495 INFO L78 Accepts]: Start accepts. Automaton has 6529 states and 8358 transitions. Word has length 253 [2020-10-29 06:53:43,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:43,496 INFO L481 AbstractCegarLoop]: Abstraction has 6529 states and 8358 transitions. [2020-10-29 06:53:43,496 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:53:43,496 INFO L276 IsEmpty]: Start isEmpty. Operand 6529 states and 8358 transitions. [2020-10-29 06:53:43,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2020-10-29 06:53:43,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:43,505 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:43,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:53:43,506 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:43,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:43,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1108192419, now seen corresponding path program 1 times [2020-10-29 06:53:43,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:43,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743346596] [2020-10-29 06:53:43,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:43,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:43,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:45,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:45,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-29 06:53:45,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:53:45,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1640 [2020-10-29 06:53:45,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:45,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:53:45,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 06:53:45,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:45,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:45,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:45,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:45,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:45,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:45,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:53:45,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:45,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:45,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:45,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:45,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:45,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:45,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:45,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:45,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:53:45,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:45,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 06:53:45,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:45,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:45,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:45,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:45,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:53:45,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:45,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:53:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:45,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:45,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:45,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:53:45,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:45,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-29 06:53:45,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:45,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:45,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:45,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:45,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 06:53:45,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:45,983 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 157 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:53:45,983 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743346596] [2020-10-29 06:53:45,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:45,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:53:45,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400880851] [2020-10-29 06:53:45,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:53:45,985 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:45,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:53:45,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:53:45,986 INFO L87 Difference]: Start difference. First operand 6529 states and 8358 transitions. Second operand 7 states. [2020-10-29 06:53:49,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:49,551 INFO L93 Difference]: Finished difference Result 13917 states and 18243 transitions. [2020-10-29 06:53:49,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 06:53:49,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 254 [2020-10-29 06:53:49,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:49,608 INFO L225 Difference]: With dead ends: 13917 [2020-10-29 06:53:49,608 INFO L226 Difference]: Without dead ends: 7772 [2020-10-29 06:53:49,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:53:49,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7772 states. [2020-10-29 06:53:49,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7772 to 7735. [2020-10-29 06:53:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7735 states. [2020-10-29 06:53:49,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7735 states to 7735 states and 9846 transitions. [2020-10-29 06:53:49,850 INFO L78 Accepts]: Start accepts. Automaton has 7735 states and 9846 transitions. Word has length 254 [2020-10-29 06:53:49,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:49,850 INFO L481 AbstractCegarLoop]: Abstraction has 7735 states and 9846 transitions. [2020-10-29 06:53:49,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:53:49,851 INFO L276 IsEmpty]: Start isEmpty. Operand 7735 states and 9846 transitions. [2020-10-29 06:53:49,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-29 06:53:49,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:49,860 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:49,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 06:53:49,860 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:49,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:49,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1889562130, now seen corresponding path program 1 times [2020-10-29 06:53:49,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:49,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [705279477] [2020-10-29 06:53:49,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:49,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:50,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:50,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:50,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-29 06:53:50,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:53:50,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 975 [2020-10-29 06:53:50,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:50,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:53:50,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 06:53:50,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 06:53:51,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:51,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:51,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:51,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:51,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:51,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 06:53:51,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:51,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:51,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:51,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:51,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:51,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:51,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:51,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:53:51,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:51,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 06:53:51,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:51,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:51,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:51,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:51,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:53:51,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:51,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:51,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:51,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:53:51,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:51,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-29 06:53:51,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:51,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:51,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:53:51,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 91 proven. 2 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-29 06:53:51,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [705279477] [2020-10-29 06:53:51,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:51,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:53:51,620 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539530852] [2020-10-29 06:53:51,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:53:51,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:51,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:53:51,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:53:51,623 INFO L87 Difference]: Start difference. First operand 7735 states and 9846 transitions. Second operand 5 states. [2020-10-29 06:53:55,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:53:55,158 INFO L93 Difference]: Finished difference Result 14917 states and 19078 transitions. [2020-10-29 06:53:55,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:53:55,159 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 280 [2020-10-29 06:53:55,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:53:55,189 INFO L225 Difference]: With dead ends: 14917 [2020-10-29 06:53:55,189 INFO L226 Difference]: Without dead ends: 7376 [2020-10-29 06:53:55,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:53:55,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7376 states. [2020-10-29 06:53:55,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7376 to 7335. [2020-10-29 06:53:55,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7335 states. [2020-10-29 06:53:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7335 states to 7335 states and 8947 transitions. [2020-10-29 06:53:55,380 INFO L78 Accepts]: Start accepts. Automaton has 7335 states and 8947 transitions. Word has length 280 [2020-10-29 06:53:55,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:53:55,381 INFO L481 AbstractCegarLoop]: Abstraction has 7335 states and 8947 transitions. [2020-10-29 06:53:55,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:53:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 7335 states and 8947 transitions. [2020-10-29 06:53:55,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-29 06:53:55,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:53:55,397 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:53:55,398 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 06:53:55,398 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:53:55,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:53:55,398 INFO L82 PathProgramCache]: Analyzing trace with hash 703219245, now seen corresponding path program 1 times [2020-10-29 06:53:55,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:53:55,399 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450408110] [2020-10-29 06:53:55,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:53:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:55,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:55,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:55,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:57,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:58,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:58,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-29 06:53:58,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:53:58,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3288 [2020-10-29 06:53:58,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:58,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:53:58,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:53:58,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:53:58,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:58,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:53:58,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:58,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:58,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:58,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:53:58,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:58,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:53:58,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:58,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:58,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:58,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:53:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:58,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:59,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:59,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-29 06:53:59,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:59,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 06:53:59,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:59,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:53:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:59,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:53:59,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:59,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-29 06:53:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:59,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:59,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:59,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 06:53:59,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:53:59,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 06:53:59,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:59,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:53:59,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:53:59,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 06:53:59,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:53:59,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:53:59,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:53:59,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:59,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:53:59,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:53:59,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 06:53:59,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:53:59,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 06:53:59,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:53:59,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:53:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:53:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:53:59,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 06:53:59,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:53:59,719 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 257 proven. 46 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 06:53:59,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450408110] [2020-10-29 06:53:59,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:53:59,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:53:59,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784055856] [2020-10-29 06:53:59,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:53:59,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:53:59,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:53:59,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:53:59,722 INFO L87 Difference]: Start difference. First operand 7335 states and 8947 transitions. Second operand 6 states. [2020-10-29 06:54:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:02,886 INFO L93 Difference]: Finished difference Result 15539 states and 19552 transitions. [2020-10-29 06:54:02,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:54:02,894 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2020-10-29 06:54:02,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:02,931 INFO L225 Difference]: With dead ends: 15539 [2020-10-29 06:54:02,931 INFO L226 Difference]: Without dead ends: 9949 [2020-10-29 06:54:02,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:54:02,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9949 states. [2020-10-29 06:54:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9949 to 9908. [2020-10-29 06:54:03,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9908 states. [2020-10-29 06:54:03,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9908 states to 9908 states and 12324 transitions. [2020-10-29 06:54:03,242 INFO L78 Accepts]: Start accepts. Automaton has 9908 states and 12324 transitions. Word has length 340 [2020-10-29 06:54:03,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:03,243 INFO L481 AbstractCegarLoop]: Abstraction has 9908 states and 12324 transitions. [2020-10-29 06:54:03,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:54:03,243 INFO L276 IsEmpty]: Start isEmpty. Operand 9908 states and 12324 transitions. [2020-10-29 06:54:03,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-29 06:54:03,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:03,263 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:03,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 06:54:03,263 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:03,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:03,264 INFO L82 PathProgramCache]: Analyzing trace with hash -1732020883, now seen corresponding path program 1 times [2020-10-29 06:54:03,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:03,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433108030] [2020-10-29 06:54:03,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:03,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:03,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:05,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:08,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:08,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-29 06:54:08,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:54:08,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 06:54:08,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:08,384 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:54:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:54:08,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 06:54:08,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:08,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:08,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:08,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:08,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:08,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:08,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 06:54:08,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:08,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:08,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:08,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:08,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:08,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:08,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:08,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:08,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:54:08,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:08,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 06:54:08,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:08,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:08,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:08,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:08,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:08,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:54:08,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:08,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:08,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:08,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:54:08,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:08,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 06:54:08,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:08,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:08,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:08,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:08,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:54:08,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:08,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:54:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:08,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:08,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:09,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:09,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 06:54:09,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:09,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-10-29 06:54:09,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:09,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:09,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:09,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 06:54:09,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:09,399 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 247 proven. 46 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-29 06:54:09,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433108030] [2020-10-29 06:54:09,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:09,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:54:09,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858347051] [2020-10-29 06:54:09,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:54:09,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:09,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:54:09,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:54:09,401 INFO L87 Difference]: Start difference. First operand 9908 states and 12324 transitions. Second operand 6 states. [2020-10-29 06:54:12,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:12,593 INFO L93 Difference]: Finished difference Result 19628 states and 24944 transitions. [2020-10-29 06:54:12,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:54:12,594 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2020-10-29 06:54:12,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:12,635 INFO L225 Difference]: With dead ends: 19628 [2020-10-29 06:54:12,635 INFO L226 Difference]: Without dead ends: 11465 [2020-10-29 06:54:12,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:54:12,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11465 states. [2020-10-29 06:54:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11465 to 11423. [2020-10-29 06:54:12,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11423 states. [2020-10-29 06:54:12,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11423 states to 11423 states and 14368 transitions. [2020-10-29 06:54:12,930 INFO L78 Accepts]: Start accepts. Automaton has 11423 states and 14368 transitions. Word has length 340 [2020-10-29 06:54:12,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:12,931 INFO L481 AbstractCegarLoop]: Abstraction has 11423 states and 14368 transitions. [2020-10-29 06:54:12,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:54:12,931 INFO L276 IsEmpty]: Start isEmpty. Operand 11423 states and 14368 transitions. [2020-10-29 06:54:12,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-29 06:54:12,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:12,957 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:12,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 06:54:12,957 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:12,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:12,958 INFO L82 PathProgramCache]: Analyzing trace with hash 159622585, now seen corresponding path program 1 times [2020-10-29 06:54:12,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:12,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1034333569] [2020-10-29 06:54:12,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:13,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:13,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:15,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:15,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 383 [2020-10-29 06:54:15,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:54:15,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2716 [2020-10-29 06:54:15,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:15,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-29 06:54:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 06:54:15,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:15,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:15,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:15,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:15,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:15,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:15,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 06:54:15,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:15,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:15,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:15,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:15,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:15,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:15,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:15,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:15,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:54:15,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:15,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 06:54:15,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:15,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:15,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:16,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:54:16,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:16,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:16,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:16,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-29 06:54:16,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:16,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 06:54:16,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:16,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 06:54:16,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:16,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-29 06:54:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:16,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:16,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:16,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 06:54:16,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:16,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-29 06:54:16,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:16,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:16,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:16,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:16,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 06:54:16,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:16,443 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 308 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-29 06:54:16,444 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1034333569] [2020-10-29 06:54:16,444 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:16,444 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:54:16,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312112633] [2020-10-29 06:54:16,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:16,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:16,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:16,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:16,446 INFO L87 Difference]: Start difference. First operand 11423 states and 14368 transitions. Second operand 7 states. [2020-10-29 06:54:21,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:21,833 INFO L93 Difference]: Finished difference Result 24668 states and 31560 transitions. [2020-10-29 06:54:21,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:54:21,835 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 367 [2020-10-29 06:54:21,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:21,881 INFO L225 Difference]: With dead ends: 24668 [2020-10-29 06:54:21,881 INFO L226 Difference]: Without dead ends: 13629 [2020-10-29 06:54:21,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:54:21,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13629 states. [2020-10-29 06:54:22,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13629 to 13190. [2020-10-29 06:54:22,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13190 states. [2020-10-29 06:54:22,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13190 states to 13190 states and 16472 transitions. [2020-10-29 06:54:22,230 INFO L78 Accepts]: Start accepts. Automaton has 13190 states and 16472 transitions. Word has length 367 [2020-10-29 06:54:22,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:22,231 INFO L481 AbstractCegarLoop]: Abstraction has 13190 states and 16472 transitions. [2020-10-29 06:54:22,231 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:22,231 INFO L276 IsEmpty]: Start isEmpty. Operand 13190 states and 16472 transitions. [2020-10-29 06:54:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-29 06:54:22,258 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:22,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:22,259 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 06:54:22,259 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:22,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:22,260 INFO L82 PathProgramCache]: Analyzing trace with hash -865099084, now seen corresponding path program 1 times [2020-10-29 06:54:22,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:22,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466793048] [2020-10-29 06:54:22,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:22,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:23,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:23,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 380 [2020-10-29 06:54:23,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:23,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1541 [2020-10-29 06:54:23,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:23,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:54:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-29 06:54:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 219 [2020-10-29 06:54:23,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:24,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:24,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:24,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:24,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:24,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:24,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 06:54:24,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:24,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:24,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:24,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:24,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:24,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:24,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:24,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:54:24,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:24,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-29 06:54:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:24,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-29 06:54:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:24,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:24,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:24,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 06:54:24,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 204 [2020-10-29 06:54:24,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:24,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:54:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:24,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 06:54:24,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 237 backedges. 191 proven. 45 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:54:24,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466793048] [2020-10-29 06:54:24,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:24,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:54:24,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910739290] [2020-10-29 06:54:24,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:54:24,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:24,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:54:24,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:54:24,765 INFO L87 Difference]: Start difference. First operand 13190 states and 16472 transitions. Second operand 8 states. [2020-10-29 06:54:30,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:30,322 INFO L93 Difference]: Finished difference Result 32939 states and 42178 transitions. [2020-10-29 06:54:30,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 06:54:30,324 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 366 [2020-10-29 06:54:30,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:30,404 INFO L225 Difference]: With dead ends: 32939 [2020-10-29 06:54:30,405 INFO L226 Difference]: Without dead ends: 21498 [2020-10-29 06:54:30,431 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-29 06:54:30,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21498 states. [2020-10-29 06:54:31,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21498 to 20878. [2020-10-29 06:54:31,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20878 states. [2020-10-29 06:54:31,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20878 states to 20878 states and 26172 transitions. [2020-10-29 06:54:31,085 INFO L78 Accepts]: Start accepts. Automaton has 20878 states and 26172 transitions. Word has length 366 [2020-10-29 06:54:31,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:31,086 INFO L481 AbstractCegarLoop]: Abstraction has 20878 states and 26172 transitions. [2020-10-29 06:54:31,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:54:31,086 INFO L276 IsEmpty]: Start isEmpty. Operand 20878 states and 26172 transitions. [2020-10-29 06:54:31,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-10-29 06:54:31,117 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:31,117 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:31,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 06:54:31,118 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:31,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:31,118 INFO L82 PathProgramCache]: Analyzing trace with hash 739580657, now seen corresponding path program 1 times [2020-10-29 06:54:31,119 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:31,119 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010933025] [2020-10-29 06:54:31,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:31,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:31,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:31,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:32,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:36,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:36,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 397 [2020-10-29 06:54:36,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:54:36,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 06:54:36,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:36,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:54:36,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:54:36,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:36,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:36,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:36,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:36,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:36,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:54:36,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:36,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:36,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:36,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:36,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:36,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:36,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:54:36,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:36,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 06:54:36,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:36,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:36,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:54:36,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:36,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:54:36,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:36,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:36,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:36,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 06:54:36,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:36,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-29 06:54:36,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:36,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:36,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:36,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:36,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 06:54:36,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2020-10-29 06:54:36,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:36,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:36,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:36,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 06:54:36,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:36,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 06:54:36,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:36,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:54:36,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:36,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:37,155 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 246 proven. 86 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-29 06:54:37,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010933025] [2020-10-29 06:54:37,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:37,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:54:37,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732963893] [2020-10-29 06:54:37,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:54:37,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:37,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:54:37,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:54:37,158 INFO L87 Difference]: Start difference. First operand 20878 states and 26172 transitions. Second operand 7 states. [2020-10-29 06:54:42,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:42,812 INFO L93 Difference]: Finished difference Result 45112 states and 57280 transitions. [2020-10-29 06:54:42,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:54:42,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 381 [2020-10-29 06:54:42,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:42,893 INFO L225 Difference]: With dead ends: 45112 [2020-10-29 06:54:42,893 INFO L226 Difference]: Without dead ends: 24618 [2020-10-29 06:54:42,933 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:54:42,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24618 states. [2020-10-29 06:54:43,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24618 to 23979. [2020-10-29 06:54:43,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23979 states. [2020-10-29 06:54:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23979 states to 23979 states and 29964 transitions. [2020-10-29 06:54:43,488 INFO L78 Accepts]: Start accepts. Automaton has 23979 states and 29964 transitions. Word has length 381 [2020-10-29 06:54:43,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:43,489 INFO L481 AbstractCegarLoop]: Abstraction has 23979 states and 29964 transitions. [2020-10-29 06:54:43,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:54:43,489 INFO L276 IsEmpty]: Start isEmpty. Operand 23979 states and 29964 transitions. [2020-10-29 06:54:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2020-10-29 06:54:43,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:43,515 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:43,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 06:54:43,516 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:43,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:43,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1696459664, now seen corresponding path program 1 times [2020-10-29 06:54:43,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:43,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740361352] [2020-10-29 06:54:43,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:43,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:43,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:43,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:48,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:48,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-29 06:54:48,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:54:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 06:54:48,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:48,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:54:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-29 06:54:48,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-29 06:54:48,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:48,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:54:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:48,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:48,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:48,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:54:48,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:48,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:54:48,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:48,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:54:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:48,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:54:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:48,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:54:48,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:48,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:48,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:48,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:54:48,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-29 06:54:48,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:48,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:54:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:54:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:48,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:54:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:48,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:49,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:49,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:49,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-29 06:54:49,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:54:49,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 06:54:49,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:49,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 06:54:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:54:49,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-29 06:54:49,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:49,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2020-10-29 06:54:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:49,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:49,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:54:49,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 06:54:49,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:54:49,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 06:54:49,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:54:49,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:54:49,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:54:49,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:54:49,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 06:54:49,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:54:49,393 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 309 proven. 4 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-29 06:54:49,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740361352] [2020-10-29 06:54:49,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:54:49,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 06:54:49,394 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103037114] [2020-10-29 06:54:49,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:54:49,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:54:49,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:54:49,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:54:49,396 INFO L87 Difference]: Start difference. First operand 23979 states and 29964 transitions. Second operand 10 states. [2020-10-29 06:54:53,436 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 06:54:57,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:54:57,793 INFO L93 Difference]: Finished difference Result 55236 states and 70041 transitions. [2020-10-29 06:54:57,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 06:54:57,794 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 384 [2020-10-29 06:54:57,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:54:57,911 INFO L225 Difference]: With dead ends: 55236 [2020-10-29 06:54:57,911 INFO L226 Difference]: Without dead ends: 31641 [2020-10-29 06:54:57,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-29 06:54:57,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31641 states. [2020-10-29 06:54:58,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31641 to 30441. [2020-10-29 06:54:58,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30441 states. [2020-10-29 06:54:58,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30441 states to 30441 states and 38228 transitions. [2020-10-29 06:54:58,758 INFO L78 Accepts]: Start accepts. Automaton has 30441 states and 38228 transitions. Word has length 384 [2020-10-29 06:54:58,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:54:58,759 INFO L481 AbstractCegarLoop]: Abstraction has 30441 states and 38228 transitions. [2020-10-29 06:54:58,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:54:58,760 INFO L276 IsEmpty]: Start isEmpty. Operand 30441 states and 38228 transitions. [2020-10-29 06:54:58,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2020-10-29 06:54:58,807 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:54:58,807 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:54:58,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 06:54:58,808 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:54:58,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:54:58,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1442782725, now seen corresponding path program 1 times [2020-10-29 06:54:58,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:54:58,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758833344] [2020-10-29 06:54:58,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:54:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:54:58,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:59,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:59,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:54:59,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:00,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:03,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:03,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 415 [2020-10-29 06:55:03,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:55:03,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 06:55:03,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:03,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 06:55:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:03,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 406 [2020-10-29 06:55:03,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:04,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:04,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:04,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:04,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:04,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:04,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 06:55:04,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:04,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:04,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:04,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:04,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:04,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:04,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:04,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:04,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:04,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-29 06:55:04,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:04,271 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:04,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:55:04,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:04,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:55:04,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:04,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:04,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:04,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:55:04,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:04,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 06:55:04,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:04,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:55:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:04,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 06:55:04,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:04,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2020-10-29 06:55:04,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:04,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:04,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:04,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:04,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:04,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-10-29 06:55:04,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:04,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:04,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:55:04,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 0 proven. 352 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2020-10-29 06:55:05,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758833344] [2020-10-29 06:55:05,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:05,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 06:55:05,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601471332] [2020-10-29 06:55:05,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 06:55:05,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:05,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 06:55:05,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 06:55:05,062 INFO L87 Difference]: Start difference. First operand 30441 states and 38228 transitions. Second operand 10 states. [2020-10-29 06:55:05,258 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2020-10-29 06:55:06,311 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-29 06:55:09,785 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-10-29 06:55:11,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:11,472 INFO L93 Difference]: Finished difference Result 65839 states and 84823 transitions. [2020-10-29 06:55:11,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 06:55:11,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 399 [2020-10-29 06:55:11,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:11,631 INFO L225 Difference]: With dead ends: 65839 [2020-10-29 06:55:11,632 INFO L226 Difference]: Without dead ends: 37539 [2020-10-29 06:55:11,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-10-29 06:55:11,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37539 states. [2020-10-29 06:55:12,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37539 to 36828. [2020-10-29 06:55:12,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36828 states. [2020-10-29 06:55:12,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36828 states to 36828 states and 45658 transitions. [2020-10-29 06:55:12,718 INFO L78 Accepts]: Start accepts. Automaton has 36828 states and 45658 transitions. Word has length 399 [2020-10-29 06:55:12,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:12,719 INFO L481 AbstractCegarLoop]: Abstraction has 36828 states and 45658 transitions. [2020-10-29 06:55:12,719 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 06:55:12,719 INFO L276 IsEmpty]: Start isEmpty. Operand 36828 states and 45658 transitions. [2020-10-29 06:55:12,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-10-29 06:55:12,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:12,759 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:55:12,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 06:55:12,759 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:12,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:12,760 INFO L82 PathProgramCache]: Analyzing trace with hash 656788985, now seen corresponding path program 1 times [2020-10-29 06:55:12,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:12,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846516144] [2020-10-29 06:55:12,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:12,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:12,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:13,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:15,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:15,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-29 06:55:15,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:55:15,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2958 [2020-10-29 06:55:15,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:15,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 255 [2020-10-29 06:55:15,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 06:55:15,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:15,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:15,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:15,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:15,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:15,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:15,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:15,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 06:55:15,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:15,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:15,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:15,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:15,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:15,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:15,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:16,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:16,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:16,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:16,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-29 06:55:16,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 06:55:16,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:16,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:16,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:16,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:16,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-29 06:55:16,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:16,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:16,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:16,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 06:55:16,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:16,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-29 06:55:16,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:16,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:16,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 06:55:16,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:16,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-29 06:55:16,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:16,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:16,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:16,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:16,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:16,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 06:55:16,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:16,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:16,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:16,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 06:55:16,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:16,457 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 332 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-29 06:55:16,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846516144] [2020-10-29 06:55:16,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:16,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:55:16,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740191880] [2020-10-29 06:55:16,459 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:16,459 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:16,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:16,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:16,459 INFO L87 Difference]: Start difference. First operand 36828 states and 45658 transitions. Second operand 7 states. [2020-10-29 06:55:20,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:20,896 INFO L93 Difference]: Finished difference Result 78765 states and 99915 transitions. [2020-10-29 06:55:20,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:55:20,897 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 422 [2020-10-29 06:55:20,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:21,066 INFO L225 Difference]: With dead ends: 78765 [2020-10-29 06:55:21,066 INFO L226 Difference]: Without dead ends: 42321 [2020-10-29 06:55:21,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:55:21,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42321 states. [2020-10-29 06:55:22,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42321 to 41040. [2020-10-29 06:55:22,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41040 states. [2020-10-29 06:55:22,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41040 states to 41040 states and 49787 transitions. [2020-10-29 06:55:22,117 INFO L78 Accepts]: Start accepts. Automaton has 41040 states and 49787 transitions. Word has length 422 [2020-10-29 06:55:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:22,118 INFO L481 AbstractCegarLoop]: Abstraction has 41040 states and 49787 transitions. [2020-10-29 06:55:22,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:55:22,118 INFO L276 IsEmpty]: Start isEmpty. Operand 41040 states and 49787 transitions. [2020-10-29 06:55:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2020-10-29 06:55:22,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:22,152 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:55:22,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 06:55:22,153 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:22,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:22,153 INFO L82 PathProgramCache]: Analyzing trace with hash -303886817, now seen corresponding path program 1 times [2020-10-29 06:55:22,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:22,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862922616] [2020-10-29 06:55:22,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:22,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:22,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:25,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:27,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:27,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 470 [2020-10-29 06:55:27,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:55:27,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4896 [2020-10-29 06:55:27,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:27,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 06:55:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-29 06:55:27,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 06:55:27,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:27,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:27,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:27,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:27,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:27,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:55:27,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:27,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:27,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:27,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:27,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:27,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:27,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:27,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:27,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:27,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 06:55:27,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:27,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:27,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:27,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:27,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:27,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:55:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:27,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:27,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:27,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 06:55:27,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:27,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 06:55:27,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:27,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:27,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:27,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 06:55:27,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:27,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2020-10-29 06:55:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:27,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:28,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:28,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 06:55:28,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:28,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-29 06:55:28,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:28,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 06:55:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:28,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 06:55:28,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:28,744 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 354 proven. 17 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-29 06:55:28,744 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862922616] [2020-10-29 06:55:28,744 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:28,744 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:55:28,744 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514980786] [2020-10-29 06:55:28,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:55:28,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:28,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:55:28,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:55:28,746 INFO L87 Difference]: Start difference. First operand 41040 states and 49787 transitions. Second operand 8 states. [2020-10-29 06:55:31,367 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-10-29 06:55:33,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:33,255 INFO L93 Difference]: Finished difference Result 76215 states and 92857 transitions. [2020-10-29 06:55:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:55:33,256 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 454 [2020-10-29 06:55:33,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:33,364 INFO L225 Difference]: With dead ends: 76215 [2020-10-29 06:55:33,364 INFO L226 Difference]: Without dead ends: 40936 [2020-10-29 06:55:33,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:55:33,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40936 states. [2020-10-29 06:55:34,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40936 to 40658. [2020-10-29 06:55:34,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40658 states. [2020-10-29 06:55:34,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40658 states to 40658 states and 49193 transitions. [2020-10-29 06:55:34,499 INFO L78 Accepts]: Start accepts. Automaton has 40658 states and 49193 transitions. Word has length 454 [2020-10-29 06:55:34,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:34,500 INFO L481 AbstractCegarLoop]: Abstraction has 40658 states and 49193 transitions. [2020-10-29 06:55:34,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:55:34,500 INFO L276 IsEmpty]: Start isEmpty. Operand 40658 states and 49193 transitions. [2020-10-29 06:55:34,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-29 06:55:34,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:34,901 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:55:34,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 06:55:34,902 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:34,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:34,905 INFO L82 PathProgramCache]: Analyzing trace with hash -847202912, now seen corresponding path program 1 times [2020-10-29 06:55:34,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:34,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682590799] [2020-10-29 06:55:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:35,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:35,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:35,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:35,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:35,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:35,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:36,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:36,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:36,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-29 06:55:36,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 06:55:36,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1957 [2020-10-29 06:55:36,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:36,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:55:36,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-29 06:55:36,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:37,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:37,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:37,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:37,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:37,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:37,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:37,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:55:37,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:37,131 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:55:37,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:37,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:37,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:37,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:37,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:37,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-29 06:55:37,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:37,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-29 06:55:37,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:37,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:37,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 06:55:37,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:37,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-29 06:55:37,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:37,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:37,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:37,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:37,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 06:55:37,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:37,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 06:55:37,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:37,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:37,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-29 06:55:37,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 06:55:37,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:37,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2020-10-29 06:55:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:37,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:37,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:37,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:37,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:37,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 06:55:37,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:37,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-29 06:55:37,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:37,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:37,797 INFO L134 CoverageAnalysis]: Checked inductivity of 516 backedges. 140 proven. 6 refuted. 0 times theorem prover too weak. 370 trivial. 0 not checked. [2020-10-29 06:55:37,797 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682590799] [2020-10-29 06:55:37,797 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:37,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:55:37,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378277086] [2020-10-29 06:55:37,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:55:37,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:37,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:55:37,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:55:37,799 INFO L87 Difference]: Start difference. First operand 40658 states and 49193 transitions. Second operand 6 states. [2020-10-29 06:55:40,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:40,301 INFO L93 Difference]: Finished difference Result 73670 states and 89583 transitions. [2020-10-29 06:55:40,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:55:40,302 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 469 [2020-10-29 06:55:40,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:40,424 INFO L225 Difference]: With dead ends: 73670 [2020-10-29 06:55:40,424 INFO L226 Difference]: Without dead ends: 37657 [2020-10-29 06:55:40,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:40,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37657 states. [2020-10-29 06:55:41,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37657 to 37549. [2020-10-29 06:55:41,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37549 states. [2020-10-29 06:55:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37549 states to 37549 states and 45348 transitions. [2020-10-29 06:55:41,546 INFO L78 Accepts]: Start accepts. Automaton has 37549 states and 45348 transitions. Word has length 469 [2020-10-29 06:55:41,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:41,547 INFO L481 AbstractCegarLoop]: Abstraction has 37549 states and 45348 transitions. [2020-10-29 06:55:41,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:55:41,547 INFO L276 IsEmpty]: Start isEmpty. Operand 37549 states and 45348 transitions. [2020-10-29 06:55:41,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2020-10-29 06:55:41,585 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:41,586 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:55:41,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 06:55:41,586 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:41,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:41,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1665097390, now seen corresponding path program 1 times [2020-10-29 06:55:41,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:41,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1953119589] [2020-10-29 06:55:41,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:41,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:42,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:42,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:42,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:42,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:44,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:46,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:46,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 493 [2020-10-29 06:55:46,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 06:55:46,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 06:55:46,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:46,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:46,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:46,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-29 06:55:46,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 06:55:46,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:46,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:46,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:46,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:46,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:46,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:46,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:55:46,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:46,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:46,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:46,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:46,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:46,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:46,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:46,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:46,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:46,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 06:55:46,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:46,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:46,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:46,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:46,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:55:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:46,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:47,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:47,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 06:55:47,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 06:55:47,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:47,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:47,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 06:55:47,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:47,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-29 06:55:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:47,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:47,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:47,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 06:55:47,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:47,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 06:55:47,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:47,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:55:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:55:47,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-29 06:55:47,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:47,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2020-10-29 06:55:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:47,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:47,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:47,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:47,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:47,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 06:55:47,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:47,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:47,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-29 06:55:47,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:47,770 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 357 proven. 95 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-29 06:55:47,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1953119589] [2020-10-29 06:55:47,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:47,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:55:47,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954641970] [2020-10-29 06:55:47,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:47,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:47,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:47,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:47,779 INFO L87 Difference]: Start difference. First operand 37549 states and 45348 transitions. Second operand 7 states. [2020-10-29 06:55:52,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:55:52,202 INFO L93 Difference]: Finished difference Result 72190 states and 88034 transitions. [2020-10-29 06:55:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:55:52,206 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 475 [2020-10-29 06:55:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:55:52,286 INFO L225 Difference]: With dead ends: 72190 [2020-10-29 06:55:52,286 INFO L226 Difference]: Without dead ends: 38898 [2020-10-29 06:55:52,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:55:52,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38898 states. [2020-10-29 06:55:52,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38898 to 38608. [2020-10-29 06:55:52,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38608 states. [2020-10-29 06:55:53,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38608 states to 38608 states and 45592 transitions. [2020-10-29 06:55:53,048 INFO L78 Accepts]: Start accepts. Automaton has 38608 states and 45592 transitions. Word has length 475 [2020-10-29 06:55:53,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:55:53,049 INFO L481 AbstractCegarLoop]: Abstraction has 38608 states and 45592 transitions. [2020-10-29 06:55:53,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:55:53,049 INFO L276 IsEmpty]: Start isEmpty. Operand 38608 states and 45592 transitions. [2020-10-29 06:55:53,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 486 [2020-10-29 06:55:53,085 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:55:53,085 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:55:53,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 06:55:53,086 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:55:53,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:55:53,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1919016538, now seen corresponding path program 1 times [2020-10-29 06:55:53,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:55:53,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2014843307] [2020-10-29 06:55:53,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:55:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:53,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:53,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:53,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:58,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:58,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 503 [2020-10-29 06:55:58,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:55:58,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 06:55:58,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:58,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 06:55:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 320 [2020-10-29 06:55:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 06:55:58,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:58,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:55:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:58,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:58,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:58,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:55:58,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:58,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 06:55:58,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:58,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:58,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:58,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:58,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:58,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:55:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:58,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:58,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:58,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:58,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 06:55:58,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:58,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:58,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-29 06:55:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:58,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:58,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:58,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 06:55:58,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:58,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:55:58,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:58,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:55:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:55:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:58,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 06:55:58,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:58,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:58,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:58,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 06:55:58,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:55:58,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 06:55:58,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:58,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 06:55:58,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:58,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-29 06:55:58,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:55:58,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:55:58,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:55:58,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 06:55:58,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:55:58,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-29 06:55:58,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:55:58,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:55:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:55:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:55:58,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 06:55:58,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:55:59,195 INFO L134 CoverageAnalysis]: Checked inductivity of 752 backedges. 194 proven. 10 refuted. 0 times theorem prover too weak. 548 trivial. 0 not checked. [2020-10-29 06:55:59,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2014843307] [2020-10-29 06:55:59,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:55:59,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:55:59,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484624747] [2020-10-29 06:55:59,197 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:55:59,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:55:59,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:55:59,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:55:59,200 INFO L87 Difference]: Start difference. First operand 38608 states and 45592 transitions. Second operand 7 states. [2020-10-29 06:55:59,361 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 06:56:00,307 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-29 06:56:01,661 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-29 06:56:07,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:56:07,220 INFO L93 Difference]: Finished difference Result 84756 states and 100616 transitions. [2020-10-29 06:56:07,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 06:56:07,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 485 [2020-10-29 06:56:07,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:56:07,225 INFO L225 Difference]: With dead ends: 84756 [2020-10-29 06:56:07,225 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 06:56:07,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 06:56:07,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 06:56:07,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 06:56:07,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 06:56:07,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 06:56:07,444 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 485 [2020-10-29 06:56:07,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:56:07,444 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 06:56:07,444 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:56:07,444 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 06:56:07,444 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 06:56:07,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 06:56:07,447 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 06:56:11,271 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-10-29 06:56:12,755 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 832 DAG size of output: 377