/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/array-examples/standard_init1_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:38:18,142 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:38:18,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:38:18,210 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:38:18,211 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:38:18,218 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:38:18,221 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:38:18,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:38:18,230 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:38:18,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:38:18,239 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:38:18,241 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:38:18,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:38:18,245 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:38:18,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:38:18,254 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:38:18,255 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:38:18,260 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:38:18,284 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:38:18,292 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:38:18,295 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:38:18,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:38:18,299 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:38:18,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:38:18,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:38:18,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:38:18,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:38:18,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:38:18,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:38:18,318 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:38:18,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:38:18,320 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:38:18,322 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:38:18,324 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:38:18,325 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:38:18,325 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:38:18,326 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:38:18,327 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:38:18,327 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:38:18,328 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:38:18,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:38:18,338 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 03:38:18,392 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:38:18,393 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:38:18,397 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:38:18,398 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:38:18,399 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:38:18,399 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:38:18,400 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:38:18,400 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:38:18,400 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:38:18,400 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:38:18,402 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:38:18,402 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:38:18,402 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:38:18,403 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:38:18,403 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:38:18,403 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:38:18,403 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:38:18,404 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:38:18,404 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:38:18,404 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:38:18,404 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:38:18,405 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:38:18,405 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:38:18,405 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:38:18,405 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:38:18,406 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:38:18,406 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:38:18,406 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:38:18,406 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:38:18,407 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:38:18,902 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:38:18,936 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:38:18,940 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:38:18,942 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:38:18,943 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:38:18,944 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init1_ground-1.i [2020-10-29 03:38:19,036 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4ad18bdb/6e645d64b7304e78853dd05dff0c5577/FLAGda7406ce2 [2020-10-29 03:38:19,714 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:38:19,714 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init1_ground-1.i [2020-10-29 03:38:19,724 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4ad18bdb/6e645d64b7304e78853dd05dff0c5577/FLAGda7406ce2 [2020-10-29 03:38:20,087 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b4ad18bdb/6e645d64b7304e78853dd05dff0c5577 [2020-10-29 03:38:20,092 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:38:20,101 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:38:20,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:38:20,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:38:20,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:38:20,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:38:20" (1/1) ... [2020-10-29 03:38:20,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fee6c97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:20, skipping insertion in model container [2020-10-29 03:38:20,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:38:20" (1/1) ... [2020-10-29 03:38:20,125 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:38:20,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:38:20,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:38:20,320 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:38:20,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:38:20,358 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:38:20,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:20 WrapperNode [2020-10-29 03:38:20,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:38:20,360 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:38:20,361 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:38:20,361 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:38:20,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:20" (1/1) ... [2020-10-29 03:38:20,375 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:20" (1/1) ... [2020-10-29 03:38:20,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:20" (1/1) ... [2020-10-29 03:38:20,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:20" (1/1) ... [2020-10-29 03:38:20,391 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:20" (1/1) ... [2020-10-29 03:38:20,397 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:20" (1/1) ... [2020-10-29 03:38:20,398 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:20" (1/1) ... [2020-10-29 03:38:20,401 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:38:20,402 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:38:20,402 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:38:20,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:38:20,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:20" (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 03:38:20,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:38:20,484 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:38:20,484 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:38:20,485 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:38:20,485 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:38:20,485 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:38:20,485 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:38:20,485 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:38:20,485 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:38:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:38:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:38:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:38:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:38:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:38:20,486 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:38:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:38:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:38:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:38:20,487 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:38:20,733 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:38:20,733 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 03:38:20,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:38:20 BoogieIcfgContainer [2020-10-29 03:38:20,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:38:20,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:38:20,745 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:38:20,752 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:38:20,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:38:20" (1/3) ... [2020-10-29 03:38:20,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adae776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:38:20, skipping insertion in model container [2020-10-29 03:38:20,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:38:20" (2/3) ... [2020-10-29 03:38:20,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6adae776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:38:20, skipping insertion in model container [2020-10-29 03:38:20,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:38:20" (3/3) ... [2020-10-29 03:38:20,763 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init1_ground-1.i [2020-10-29 03:38:20,798 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:38:20,811 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:38:20,859 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:38:20,937 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:38:20,937 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:38:20,939 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:38:20,939 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:38:20,940 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:38:20,940 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:38:20,940 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:38:20,940 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:38:20,980 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-29 03:38:20,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 03:38:20,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:20,994 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:20,995 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:21,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:21,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1010338642, now seen corresponding path program 1 times [2020-10-29 03:38:21,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:21,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275705650] [2020-10-29 03:38:21,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:21,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:21,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:21,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 03:38:21,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:21,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 03:38:21,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:21,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:38:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:21,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:38:21,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 03:38:21,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:21,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:21,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:21,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:21,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 03:38:21,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:21,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:21,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:21,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:21,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:21,597 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 03:38:21,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275705650] [2020-10-29 03:38:21,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:38:21,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:38:21,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311076867] [2020-10-29 03:38:21,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:38:21,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:21,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:38:21,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:38:21,645 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 4 states. [2020-10-29 03:38:21,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:21,842 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-10-29 03:38:21,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:38:21,844 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-29 03:38:21,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:21,852 INFO L225 Difference]: With dead ends: 47 [2020-10-29 03:38:21,853 INFO L226 Difference]: Without dead ends: 21 [2020-10-29 03:38:21,858 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:38:21,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-29 03:38:21,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-29 03:38:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-29 03:38:21,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-10-29 03:38:21,919 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2020-10-29 03:38:21,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:21,920 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-10-29 03:38:21,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:38:21,921 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-10-29 03:38:21,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-29 03:38:21,923 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:21,924 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:21,924 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:38:21,925 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:21,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:21,926 INFO L82 PathProgramCache]: Analyzing trace with hash -1740012936, now seen corresponding path program 1 times [2020-10-29 03:38:21,926 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:21,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358581192] [2020-10-29 03:38:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:22,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:22,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-29 03:38:22,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:22,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-29 03:38:22,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:22,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:38:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 03:38:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:22,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:22,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:22,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:22,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:22,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:22,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 03:38:22,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:22,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:22,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:22,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:22,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:22,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358581192] [2020-10-29 03:38:22,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:22,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:38:22,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192878045] [2020-10-29 03:38:22,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:38:22,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:22,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:38:22,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:38:22,187 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 5 states. [2020-10-29 03:38:22,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:22,271 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-10-29 03:38:22,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:38:22,272 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-10-29 03:38:22,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:22,273 INFO L225 Difference]: With dead ends: 35 [2020-10-29 03:38:22,273 INFO L226 Difference]: Without dead ends: 22 [2020-10-29 03:38:22,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:38:22,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-29 03:38:22,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-29 03:38:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-29 03:38:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-10-29 03:38:22,283 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-10-29 03:38:22,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:22,284 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-10-29 03:38:22,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:38:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-10-29 03:38:22,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 03:38:22,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:22,285 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:22,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:38:22,286 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:22,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:22,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1409887726, now seen corresponding path program 2 times [2020-10-29 03:38:22,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:22,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195289977] [2020-10-29 03:38:22,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:22,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:22,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:22,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 03:38:22,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:22,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-29 03:38:22,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:22,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:38:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:22,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-29 03:38:22,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:22,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:22,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:22,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:22,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:22,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:22,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 03:38:22,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:22,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:22,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:22,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:22,722 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:22,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195289977] [2020-10-29 03:38:22,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:22,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:38:22,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442306282] [2020-10-29 03:38:22,724 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:38:22,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:22,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:38:22,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:38:22,729 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 6 states. [2020-10-29 03:38:22,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:22,809 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-10-29 03:38:22,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:38:22,810 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-29 03:38:22,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:22,811 INFO L225 Difference]: With dead ends: 36 [2020-10-29 03:38:22,811 INFO L226 Difference]: Without dead ends: 23 [2020-10-29 03:38:22,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:38:22,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-29 03:38:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-29 03:38:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 03:38:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-29 03:38:22,820 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2020-10-29 03:38:22,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:22,820 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-29 03:38:22,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:38:22,820 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-29 03:38:22,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:38:22,821 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:22,821 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:22,822 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:38:22,822 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:22,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:22,823 INFO L82 PathProgramCache]: Analyzing trace with hash 272560440, now seen corresponding path program 3 times [2020-10-29 03:38:22,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:22,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935930793] [2020-10-29 03:38:22,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:22,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:22,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:22,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:38:22,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:22,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-29 03:38:22,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:22,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:38:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:22,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 03:38:22,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:22,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:22,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:23,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:23,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:23,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:23,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:38:23,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:23,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:23,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:23,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:23,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:23,007 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:23,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935930793] [2020-10-29 03:38:23,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:23,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:38:23,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328234633] [2020-10-29 03:38:23,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:38:23,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:23,012 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:38:23,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:38:23,013 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-10-29 03:38:23,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:23,149 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2020-10-29 03:38:23,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:38:23,149 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-29 03:38:23,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:23,151 INFO L225 Difference]: With dead ends: 37 [2020-10-29 03:38:23,151 INFO L226 Difference]: Without dead ends: 24 [2020-10-29 03:38:23,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:38:23,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-29 03:38:23,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-29 03:38:23,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-29 03:38:23,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-10-29 03:38:23,162 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 18 [2020-10-29 03:38:23,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:23,162 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-10-29 03:38:23,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:38:23,163 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-10-29 03:38:23,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-29 03:38:23,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:23,164 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:23,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:38:23,164 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:23,165 INFO L82 PathProgramCache]: Analyzing trace with hash -624847058, now seen corresponding path program 4 times [2020-10-29 03:38:23,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:23,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [254557751] [2020-10-29 03:38:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:23,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:23,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:23,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-29 03:38:23,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:23,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-29 03:38:23,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:23,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:23,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:38:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:38:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:23,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:23,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:23,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:23,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:23,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:23,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:38:23,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:23,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:23,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:23,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:23,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:23,463 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:23,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [254557751] [2020-10-29 03:38:23,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:23,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:38:23,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418972813] [2020-10-29 03:38:23,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:38:23,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:23,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:38:23,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:38:23,466 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 8 states. [2020-10-29 03:38:23,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:23,561 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-29 03:38:23,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:38:23,561 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-29 03:38:23,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:23,562 INFO L225 Difference]: With dead ends: 38 [2020-10-29 03:38:23,562 INFO L226 Difference]: Without dead ends: 25 [2020-10-29 03:38:23,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:38:23,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-29 03:38:23,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-29 03:38:23,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-29 03:38:23,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-10-29 03:38:23,569 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 19 [2020-10-29 03:38:23,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:23,569 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-10-29 03:38:23,569 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:38:23,570 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-10-29 03:38:23,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:38:23,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:23,571 INFO L422 BasicCegarLoop]: trace histogram [5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:23,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:38:23,571 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:23,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:23,572 INFO L82 PathProgramCache]: Analyzing trace with hash 1620291576, now seen corresponding path program 5 times [2020-10-29 03:38:23,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:23,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436605815] [2020-10-29 03:38:23,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:23,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:23,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:23,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:38:23,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:23,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-29 03:38:23,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:23,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:38:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:23,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:38:23,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:23,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:23,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:23,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:23,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:23,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:23,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:38:23,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:23,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:23,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:23,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:23,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:23,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:23,914 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:23,914 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436605815] [2020-10-29 03:38:23,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:23,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:38:23,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968288511] [2020-10-29 03:38:23,916 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:38:23,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:23,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:38:23,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:38:23,919 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 9 states. [2020-10-29 03:38:24,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:24,029 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-10-29 03:38:24,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:38:24,032 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-10-29 03:38:24,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:24,033 INFO L225 Difference]: With dead ends: 39 [2020-10-29 03:38:24,033 INFO L226 Difference]: Without dead ends: 26 [2020-10-29 03:38:24,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:38:24,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-29 03:38:24,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-29 03:38:24,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 03:38:24,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-29 03:38:24,045 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 20 [2020-10-29 03:38:24,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:24,046 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-29 03:38:24,046 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:38:24,046 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-29 03:38:24,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 03:38:24,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:24,047 INFO L422 BasicCegarLoop]: trace histogram [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:24,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:38:24,047 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:24,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:24,049 INFO L82 PathProgramCache]: Analyzing trace with hash -1794854802, now seen corresponding path program 6 times [2020-10-29 03:38:24,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:24,049 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [365308904] [2020-10-29 03:38:24,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:24,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:24,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:24,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 03:38:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-29 03:38:24,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:24,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:38:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:24,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:38:24,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:24,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:24,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:24,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:24,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:24,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:38:24,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:24,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:24,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:24,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:24,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:24,375 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:24,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [365308904] [2020-10-29 03:38:24,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:24,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:38:24,376 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739459383] [2020-10-29 03:38:24,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:38:24,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:24,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:38:24,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:38:24,379 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 10 states. [2020-10-29 03:38:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:24,525 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-29 03:38:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:38:24,525 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-10-29 03:38:24,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:24,526 INFO L225 Difference]: With dead ends: 40 [2020-10-29 03:38:24,526 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 03:38:24,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:38:24,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 03:38:24,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-29 03:38:24,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-29 03:38:24,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2020-10-29 03:38:24,533 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 21 [2020-10-29 03:38:24,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:24,533 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2020-10-29 03:38:24,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:38:24,533 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2020-10-29 03:38:24,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 03:38:24,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:24,534 INFO L422 BasicCegarLoop]: trace histogram [7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:24,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:38:24,534 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:24,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:24,535 INFO L82 PathProgramCache]: Analyzing trace with hash -290210120, now seen corresponding path program 7 times [2020-10-29 03:38:24,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:24,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153884266] [2020-10-29 03:38:24,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:24,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:24,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:24,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 03:38:24,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:24,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 03:38:24,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:24,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:38:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:24,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 03:38:24,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:24,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:24,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:24,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:24,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:24,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:24,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:38:24,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:24,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:24,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:24,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:24,818 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:24,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153884266] [2020-10-29 03:38:24,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:24,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:38:24,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031588268] [2020-10-29 03:38:24,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:38:24,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:24,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:38:24,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:38:24,821 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 11 states. [2020-10-29 03:38:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:24,875 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2020-10-29 03:38:24,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:38:24,876 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 22 [2020-10-29 03:38:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:24,877 INFO L225 Difference]: With dead ends: 41 [2020-10-29 03:38:24,877 INFO L226 Difference]: Without dead ends: 28 [2020-10-29 03:38:24,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:38:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-29 03:38:24,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-29 03:38:24,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 03:38:24,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-10-29 03:38:24,883 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 22 [2020-10-29 03:38:24,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:24,883 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-10-29 03:38:24,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:38:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-10-29 03:38:24,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:38:24,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:24,884 INFO L422 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:24,884 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:38:24,885 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:24,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:24,885 INFO L82 PathProgramCache]: Analyzing trace with hash -890865234, now seen corresponding path program 8 times [2020-10-29 03:38:24,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:24,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [75004850] [2020-10-29 03:38:24,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:24,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:25,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:25,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 03:38:25,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:25,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-29 03:38:25,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:25,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:38:25,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 03:38:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:25,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:25,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:25,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:25,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:25,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:25,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:25,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:25,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:25,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:25,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:25,221 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:25,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [75004850] [2020-10-29 03:38:25,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:25,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:38:25,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578932000] [2020-10-29 03:38:25,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:38:25,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:25,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:38:25,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:38:25,224 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 12 states. [2020-10-29 03:38:25,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:25,325 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-29 03:38:25,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:38:25,326 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-29 03:38:25,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:25,326 INFO L225 Difference]: With dead ends: 42 [2020-10-29 03:38:25,326 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 03:38:25,327 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:38:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 03:38:25,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-29 03:38:25,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-29 03:38:25,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-29 03:38:25,335 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 23 [2020-10-29 03:38:25,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:25,335 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-29 03:38:25,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:38:25,335 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-29 03:38:25,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:38:25,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:25,336 INFO L422 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:25,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:38:25,337 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:25,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:25,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1963662712, now seen corresponding path program 9 times [2020-10-29 03:38:25,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:25,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195367610] [2020-10-29 03:38:25,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:25,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:25,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:25,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:25,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:38:25,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:25,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-29 03:38:25,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:25,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:38:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:38:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:25,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:25,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:25,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:25,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:25,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:25,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:25,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:25,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:25,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:25,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:25,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195367610] [2020-10-29 03:38:25,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:25,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:38:25,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9157576] [2020-10-29 03:38:25,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:38:25,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:25,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:38:25,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:38:25,724 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 13 states. [2020-10-29 03:38:25,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:25,878 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2020-10-29 03:38:25,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:38:25,879 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 24 [2020-10-29 03:38:25,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:25,881 INFO L225 Difference]: With dead ends: 43 [2020-10-29 03:38:25,881 INFO L226 Difference]: Without dead ends: 30 [2020-10-29 03:38:25,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:38:25,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-29 03:38:25,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-29 03:38:25,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-29 03:38:25,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-10-29 03:38:25,891 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 24 [2020-10-29 03:38:25,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:25,891 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-10-29 03:38:25,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:38:25,892 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-10-29 03:38:25,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 03:38:25,898 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:25,898 INFO L422 BasicCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:25,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:38:25,898 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:25,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:25,899 INFO L82 PathProgramCache]: Analyzing trace with hash 259715822, now seen corresponding path program 10 times [2020-10-29 03:38:25,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:25,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957588280] [2020-10-29 03:38:25,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:25,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:25,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:26,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:26,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 03:38:26,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-10-29 03:38:26,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:26,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:38:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:38:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:26,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:26,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:26,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:26,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:26,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:26,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:26,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:26,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:26,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:26,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:26,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:26,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957588280] [2020-10-29 03:38:26,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:26,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:38:26,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627483613] [2020-10-29 03:38:26,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:38:26,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:26,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:38:26,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:38:26,385 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 14 states. [2020-10-29 03:38:26,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:26,479 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-10-29 03:38:26,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:38:26,480 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-29 03:38:26,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:26,481 INFO L225 Difference]: With dead ends: 44 [2020-10-29 03:38:26,481 INFO L226 Difference]: Without dead ends: 31 [2020-10-29 03:38:26,481 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:38:26,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-29 03:38:26,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-29 03:38:26,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-29 03:38:26,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-10-29 03:38:26,487 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 25 [2020-10-29 03:38:26,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:26,487 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-10-29 03:38:26,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:38:26,487 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-10-29 03:38:26,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:38:26,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:26,488 INFO L422 BasicCegarLoop]: trace histogram [11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:26,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:38:26,489 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:26,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:26,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1023030216, now seen corresponding path program 11 times [2020-10-29 03:38:26,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:26,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506557192] [2020-10-29 03:38:26,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:26,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:26,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:26,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:38:26,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:26,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-29 03:38:26,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:26,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:26,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:38:26,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:26,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:38:26,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:26,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:26,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:26,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:26,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:26,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:26,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:26,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:26,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:26,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:26,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:26,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506557192] [2020-10-29 03:38:26,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:26,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:38:26,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [839029004] [2020-10-29 03:38:26,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:38:26,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:26,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:38:26,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:38:26,965 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 15 states. [2020-10-29 03:38:27,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:27,055 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2020-10-29 03:38:27,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:38:27,056 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 26 [2020-10-29 03:38:27,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:27,057 INFO L225 Difference]: With dead ends: 45 [2020-10-29 03:38:27,057 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 03:38:27,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:38:27,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 03:38:27,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-29 03:38:27,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-29 03:38:27,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-29 03:38:27,063 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 26 [2020-10-29 03:38:27,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:27,064 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-29 03:38:27,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:38:27,064 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-29 03:38:27,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:38:27,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:27,065 INFO L422 BasicCegarLoop]: trace histogram [12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:27,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:38:27,065 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:27,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:27,066 INFO L82 PathProgramCache]: Analyzing trace with hash -2133451730, now seen corresponding path program 12 times [2020-10-29 03:38:27,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:27,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919192598] [2020-10-29 03:38:27,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:27,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:27,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:27,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:27,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 03:38:27,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-29 03:38:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:27,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:27,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:38:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:38:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:27,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:27,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:27,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:27,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:27,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:27,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:27,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:27,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:27,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:27,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:27,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:27,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:27,558 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:27,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919192598] [2020-10-29 03:38:27,559 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:27,559 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:38:27,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331088742] [2020-10-29 03:38:27,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:38:27,560 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:27,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:38:27,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:38:27,561 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 16 states. [2020-10-29 03:38:27,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:27,685 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-10-29 03:38:27,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:38:27,685 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2020-10-29 03:38:27,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:27,686 INFO L225 Difference]: With dead ends: 46 [2020-10-29 03:38:27,686 INFO L226 Difference]: Without dead ends: 33 [2020-10-29 03:38:27,687 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:38:27,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-29 03:38:27,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-10-29 03:38:27,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-29 03:38:27,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-10-29 03:38:27,692 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 27 [2020-10-29 03:38:27,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:27,692 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-10-29 03:38:27,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:38:27,693 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-10-29 03:38:27,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 03:38:27,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:27,693 INFO L422 BasicCegarLoop]: trace histogram [13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:27,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:38:27,694 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:27,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:27,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2098187000, now seen corresponding path program 13 times [2020-10-29 03:38:27,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:27,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758510152] [2020-10-29 03:38:27,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:27,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:28,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:28,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-29 03:38:28,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:28,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-29 03:38:28,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:28,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:28,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:38:28,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:28,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:38:28,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:28,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:28,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:28,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:28,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:28,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:28,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:28,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:28,298 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:28,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758510152] [2020-10-29 03:38:28,299 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:28,299 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:38:28,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188032079] [2020-10-29 03:38:28,300 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:38:28,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:28,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:38:28,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:38:28,302 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 17 states. [2020-10-29 03:38:28,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:28,416 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-10-29 03:38:28,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:38:28,417 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 28 [2020-10-29 03:38:28,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:28,418 INFO L225 Difference]: With dead ends: 47 [2020-10-29 03:38:28,418 INFO L226 Difference]: Without dead ends: 34 [2020-10-29 03:38:28,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:38:28,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-29 03:38:28,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-29 03:38:28,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-29 03:38:28,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-10-29 03:38:28,424 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 28 [2020-10-29 03:38:28,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:28,425 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-10-29 03:38:28,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:38:28,425 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-10-29 03:38:28,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:38:28,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:28,426 INFO L422 BasicCegarLoop]: trace histogram [14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:28,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:38:28,426 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:28,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:28,426 INFO L82 PathProgramCache]: Analyzing trace with hash 135001454, now seen corresponding path program 14 times [2020-10-29 03:38:28,427 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:28,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019362981] [2020-10-29 03:38:28,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:28,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:28,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:28,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:38:28,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:28,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 320 [2020-10-29 03:38:28,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:28,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:38:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:28,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:38:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:29,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:29,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:29,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:29,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:29,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:29,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:29,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:29,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:29,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:29,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:29,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:29,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:29,051 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:29,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019362981] [2020-10-29 03:38:29,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:29,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:38:29,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48480375] [2020-10-29 03:38:29,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:38:29,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:29,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:38:29,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:38:29,056 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 18 states. [2020-10-29 03:38:29,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:29,153 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-10-29 03:38:29,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:38:29,154 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2020-10-29 03:38:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:29,155 INFO L225 Difference]: With dead ends: 48 [2020-10-29 03:38:29,155 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 03:38:29,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:38:29,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 03:38:29,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-29 03:38:29,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-29 03:38:29,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-29 03:38:29,163 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 29 [2020-10-29 03:38:29,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:29,164 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-29 03:38:29,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:38:29,164 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-29 03:38:29,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:38:29,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:29,168 INFO L422 BasicCegarLoop]: trace histogram [15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:29,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:38:29,168 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:29,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:29,169 INFO L82 PathProgramCache]: Analyzing trace with hash -594208328, now seen corresponding path program 15 times [2020-10-29 03:38:29,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:29,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499295175] [2020-10-29 03:38:29,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:29,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:29,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:29,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:38:29,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:29,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-10-29 03:38:29,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:29,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:38:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:29,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:38:29,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:29,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:29,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:29,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:29,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:29,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:29,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:29,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:29,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:29,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:29,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:29,855 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:29,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499295175] [2020-10-29 03:38:29,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:29,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:38:29,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518699139] [2020-10-29 03:38:29,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:38:29,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:29,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:38:29,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:38:29,858 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 19 states. [2020-10-29 03:38:29,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:29,989 INFO L93 Difference]: Finished difference Result 49 states and 51 transitions. [2020-10-29 03:38:29,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:38:29,990 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 30 [2020-10-29 03:38:29,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:29,991 INFO L225 Difference]: With dead ends: 49 [2020-10-29 03:38:29,991 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:38:29,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:38:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:38:29,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-29 03:38:29,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 03:38:29,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-10-29 03:38:29,997 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 30 [2020-10-29 03:38:29,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:29,998 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-10-29 03:38:29,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:38:29,998 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-10-29 03:38:29,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:38:29,998 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:29,998 INFO L422 BasicCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:29,999 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:38:29,999 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:29,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:29,999 INFO L82 PathProgramCache]: Analyzing trace with hash -1724875090, now seen corresponding path program 16 times [2020-10-29 03:38:29,999 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:30,000 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936988703] [2020-10-29 03:38:30,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:30,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:30,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:30,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 03:38:30,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:30,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-29 03:38:30,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:30,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:38:30,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:30,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:38:30,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:30,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:30,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:30,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:30,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:30,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:30,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:30,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:38:30,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:30,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:30,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:30,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:30,710 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:30,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936988703] [2020-10-29 03:38:30,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:30,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:38:30,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040897218] [2020-10-29 03:38:30,713 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:38:30,713 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:30,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:38:30,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:38:30,717 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 20 states. [2020-10-29 03:38:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:30,831 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-10-29 03:38:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:38:30,832 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 31 [2020-10-29 03:38:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:30,833 INFO L225 Difference]: With dead ends: 50 [2020-10-29 03:38:30,833 INFO L226 Difference]: Without dead ends: 37 [2020-10-29 03:38:30,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:38:30,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-29 03:38:30,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-29 03:38:30,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 03:38:30,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-10-29 03:38:30,845 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 31 [2020-10-29 03:38:30,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:30,845 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-10-29 03:38:30,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:38:30,845 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-10-29 03:38:30,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:38:30,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:30,847 INFO L422 BasicCegarLoop]: trace histogram [17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:30,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:38:30,848 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:30,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:30,849 INFO L82 PathProgramCache]: Analyzing trace with hash 1879160952, now seen corresponding path program 17 times [2020-10-29 03:38:30,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:30,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268616142] [2020-10-29 03:38:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:30,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:30,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:31,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:31,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:38:31,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:31,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-29 03:38:31,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:31,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:38:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:31,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:38:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:31,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:31,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:31,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:31,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:31,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:31,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:31,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:31,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:31,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:31,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:31,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:31,636 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:31,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268616142] [2020-10-29 03:38:31,637 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:31,637 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:38:31,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285804242] [2020-10-29 03:38:31,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:38:31,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:31,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:38:31,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:38:31,646 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 21 states. [2020-10-29 03:38:31,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:31,825 INFO L93 Difference]: Finished difference Result 51 states and 53 transitions. [2020-10-29 03:38:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:38:31,825 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 32 [2020-10-29 03:38:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:31,826 INFO L225 Difference]: With dead ends: 51 [2020-10-29 03:38:31,826 INFO L226 Difference]: Without dead ends: 38 [2020-10-29 03:38:31,827 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:38:31,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-29 03:38:31,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-29 03:38:31,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:38:31,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-10-29 03:38:31,838 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 32 [2020-10-29 03:38:31,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:31,839 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-10-29 03:38:31,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:38:31,839 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-10-29 03:38:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:38:31,839 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:31,839 INFO L422 BasicCegarLoop]: trace histogram [18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:31,840 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:38:31,840 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:31,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:31,840 INFO L82 PathProgramCache]: Analyzing trace with hash 1935128558, now seen corresponding path program 18 times [2020-10-29 03:38:31,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:31,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714516132] [2020-10-29 03:38:31,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:31,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:32,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:32,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:38:32,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:32,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-29 03:38:32,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:32,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:32,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:38:32,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:32,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:38:32,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:32,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:32,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:32,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:32,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:32,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:32,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:32,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 03:38:32,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:32,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:32,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:32,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:32,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714516132] [2020-10-29 03:38:32,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:32,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:38:32,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790675963] [2020-10-29 03:38:32,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:38:32,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:32,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:38:32,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:38:32,677 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 22 states. [2020-10-29 03:38:32,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:32,769 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-10-29 03:38:32,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:38:32,770 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 33 [2020-10-29 03:38:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:32,771 INFO L225 Difference]: With dead ends: 52 [2020-10-29 03:38:32,771 INFO L226 Difference]: Without dead ends: 39 [2020-10-29 03:38:32,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:38:32,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-29 03:38:32,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-29 03:38:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:38:32,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-10-29 03:38:32,779 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 33 [2020-10-29 03:38:32,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:32,779 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-10-29 03:38:32,779 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:38:32,779 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-10-29 03:38:32,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:38:32,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:32,780 INFO L422 BasicCegarLoop]: trace histogram [19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:32,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:38:32,780 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:32,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:32,781 INFO L82 PathProgramCache]: Analyzing trace with hash -624842952, now seen corresponding path program 19 times [2020-10-29 03:38:32,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:32,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506919954] [2020-10-29 03:38:32,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:32,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:33,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:33,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:38:33,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:33,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 446 [2020-10-29 03:38:33,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:33,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:33,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:38:33,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:33,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:38:33,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:33,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:33,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:33,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:33,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:33,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:33,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:33,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:33,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:33,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:33,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:33,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:33,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:33,691 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:33,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [506919954] [2020-10-29 03:38:33,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:33,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:38:33,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019749501] [2020-10-29 03:38:33,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:38:33,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:33,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:38:33,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:38:33,694 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 23 states. [2020-10-29 03:38:33,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:33,901 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2020-10-29 03:38:33,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:38:33,902 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 34 [2020-10-29 03:38:33,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:33,902 INFO L225 Difference]: With dead ends: 53 [2020-10-29 03:38:33,903 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 03:38:33,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:38:33,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 03:38:33,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-29 03:38:33,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:38:33,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 41 transitions. [2020-10-29 03:38:33,910 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 41 transitions. Word has length 34 [2020-10-29 03:38:33,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:33,912 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 41 transitions. [2020-10-29 03:38:33,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:38:33,913 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 41 transitions. [2020-10-29 03:38:33,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:38:33,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:33,915 INFO L422 BasicCegarLoop]: trace histogram [20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:33,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:38:33,916 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:33,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:33,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1620418862, now seen corresponding path program 20 times [2020-10-29 03:38:33,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:33,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1233085303] [2020-10-29 03:38:33,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:33,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:34,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 03:38:34,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-29 03:38:34,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:34,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:38:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:34,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:38:34,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:34,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:34,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:34,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:34,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:34,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:34,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:34,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:38:34,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:34,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:34,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1233085303] [2020-10-29 03:38:34,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:34,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:38:34,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809820843] [2020-10-29 03:38:34,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:38:34,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:34,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:38:34,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:38:34,883 INFO L87 Difference]: Start difference. First operand 40 states and 41 transitions. Second operand 24 states. [2020-10-29 03:38:35,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:35,110 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-10-29 03:38:35,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:38:35,111 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 35 [2020-10-29 03:38:35,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:35,112 INFO L225 Difference]: With dead ends: 54 [2020-10-29 03:38:35,112 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 03:38:35,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:38:35,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 03:38:35,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-29 03:38:35,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:38:35,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-10-29 03:38:35,130 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 35 [2020-10-29 03:38:35,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:35,131 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-10-29 03:38:35,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:38:35,131 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-10-29 03:38:35,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:38:35,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:35,132 INFO L422 BasicCegarLoop]: trace histogram [21, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:35,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:38:35,133 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:35,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:35,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1790908936, now seen corresponding path program 21 times [2020-10-29 03:38:35,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:35,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [812214061] [2020-10-29 03:38:35,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:35,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:35,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:38:35,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:35,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-10-29 03:38:35,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:35,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:38:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:35,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:38:35,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:36,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:36,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:36,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:36,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:36,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:38:36,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:36,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:36,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:36,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [812214061] [2020-10-29 03:38:36,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:36,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:38:36,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674024384] [2020-10-29 03:38:36,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:38:36,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:36,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:38:36,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:38:36,160 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 25 states. [2020-10-29 03:38:36,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:36,306 INFO L93 Difference]: Finished difference Result 55 states and 57 transitions. [2020-10-29 03:38:36,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:38:36,307 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 36 [2020-10-29 03:38:36,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:36,307 INFO L225 Difference]: With dead ends: 55 [2020-10-29 03:38:36,308 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:38:36,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:38:36,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:38:36,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 03:38:36,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:38:36,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-10-29 03:38:36,317 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 36 [2020-10-29 03:38:36,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:36,317 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-10-29 03:38:36,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:38:36,317 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-10-29 03:38:36,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:38:36,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:36,318 INFO L422 BasicCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:36,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:38:36,318 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:36,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:36,318 INFO L82 PathProgramCache]: Analyzing trace with hash -167888274, now seen corresponding path program 22 times [2020-10-29 03:38:36,319 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:36,319 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665089996] [2020-10-29 03:38:36,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:36,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:36,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:36,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:36,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 03:38:36,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:36,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-10-29 03:38:36,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:36,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:38:36,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:36,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:38:36,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:38:37,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:37,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:37,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:37,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:37,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:37,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:37,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:37,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:37,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:37,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:37,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:37,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:37,340 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:37,343 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665089996] [2020-10-29 03:38:37,343 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:37,343 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:38:37,344 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10539154] [2020-10-29 03:38:37,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:38:37,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:37,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:38:37,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:38:37,352 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 26 states. [2020-10-29 03:38:37,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:37,512 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-10-29 03:38:37,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:38:37,513 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 37 [2020-10-29 03:38:37,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:37,514 INFO L225 Difference]: With dead ends: 56 [2020-10-29 03:38:37,514 INFO L226 Difference]: Without dead ends: 43 [2020-10-29 03:38:37,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:38:37,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-29 03:38:37,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-10-29 03:38:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:38:37,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-10-29 03:38:37,522 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 37 [2020-10-29 03:38:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:37,522 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-10-29 03:38:37,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:38:37,522 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-10-29 03:38:37,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:38:37,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:37,523 INFO L422 BasicCegarLoop]: trace histogram [23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:37,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:38:37,523 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:37,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:37,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1393855304, now seen corresponding path program 23 times [2020-10-29 03:38:37,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:37,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1048594048] [2020-10-29 03:38:37,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:37,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:37,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:38,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:38,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:38:38,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:38,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 583 [2020-10-29 03:38:38,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:38,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:38:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:38,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:38:38,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:38,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:38,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:38,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:38,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:38,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:38,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:38,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:38,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:38,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:38,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:38,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:38,624 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:38,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1048594048] [2020-10-29 03:38:38,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:38,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:38:38,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578403607] [2020-10-29 03:38:38,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:38:38,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:38,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:38:38,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:38:38,627 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 27 states. [2020-10-29 03:38:38,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:38,821 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2020-10-29 03:38:38,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:38:38,822 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 38 [2020-10-29 03:38:38,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:38,823 INFO L225 Difference]: With dead ends: 57 [2020-10-29 03:38:38,823 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 03:38:38,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:38:38,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 03:38:38,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-29 03:38:38,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 03:38:38,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-29 03:38:38,829 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 38 [2020-10-29 03:38:38,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:38,829 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-29 03:38:38,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:38:38,829 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-29 03:38:38,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:38:38,830 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:38,830 INFO L422 BasicCegarLoop]: trace histogram [24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:38,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:38:38,832 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:38,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:38,832 INFO L82 PathProgramCache]: Analyzing trace with hash -744127570, now seen corresponding path program 24 times [2020-10-29 03:38:38,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:38,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760733788] [2020-10-29 03:38:38,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:38,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:38,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:39,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:39,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:38:39,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:39,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-29 03:38:39,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:39,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:38:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:38:39,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:40,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:40,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:40,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:40,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:40,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:40,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:38:40,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:40,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:40,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:40,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:40,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:40,059 INFO L134 CoverageAnalysis]: Checked inductivity of 300 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:40,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760733788] [2020-10-29 03:38:40,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:40,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:38:40,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312880843] [2020-10-29 03:38:40,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:38:40,062 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:40,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:38:40,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:38:40,063 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 28 states. [2020-10-29 03:38:40,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:40,164 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-10-29 03:38:40,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:38:40,165 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 39 [2020-10-29 03:38:40,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:40,165 INFO L225 Difference]: With dead ends: 58 [2020-10-29 03:38:40,165 INFO L226 Difference]: Without dead ends: 45 [2020-10-29 03:38:40,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:38:40,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-29 03:38:40,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-29 03:38:40,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:38:40,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-10-29 03:38:40,170 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 39 [2020-10-29 03:38:40,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:40,170 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-10-29 03:38:40,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:38:40,170 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-10-29 03:38:40,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:38:40,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:40,171 INFO L422 BasicCegarLoop]: trace histogram [25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:40,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:38:40,171 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:40,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:40,172 INFO L82 PathProgramCache]: Analyzing trace with hash -2077404296, now seen corresponding path program 25 times [2020-10-29 03:38:40,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:40,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1599841690] [2020-10-29 03:38:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:40,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:40,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:40,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:38:40,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:40,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-29 03:38:40,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:40,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:40,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:38:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:40,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:38:40,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:41,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:41,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:41,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:41,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:41,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 03:38:41,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:41,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:41,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:41,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:41,444 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:41,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1599841690] [2020-10-29 03:38:41,445 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:41,445 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:38:41,445 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547209159] [2020-10-29 03:38:41,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:38:41,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:41,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:38:41,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:38:41,447 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 29 states. [2020-10-29 03:38:41,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:41,641 INFO L93 Difference]: Finished difference Result 59 states and 61 transitions. [2020-10-29 03:38:41,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:38:41,641 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 40 [2020-10-29 03:38:41,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:41,642 INFO L225 Difference]: With dead ends: 59 [2020-10-29 03:38:41,642 INFO L226 Difference]: Without dead ends: 46 [2020-10-29 03:38:41,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:38:41,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-29 03:38:41,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-29 03:38:41,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 03:38:41,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-10-29 03:38:41,649 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 40 [2020-10-29 03:38:41,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:41,649 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-10-29 03:38:41,649 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:38:41,649 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-10-29 03:38:41,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-29 03:38:41,649 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:41,650 INFO L422 BasicCegarLoop]: trace histogram [26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:41,650 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:38:41,650 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:41,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:41,653 INFO L82 PathProgramCache]: Analyzing trace with hash -459309842, now seen corresponding path program 26 times [2020-10-29 03:38:41,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:41,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2036722588] [2020-10-29 03:38:41,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:41,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:41,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:42,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:42,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:38:42,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:42,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 629 [2020-10-29 03:38:42,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:42,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:38:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:42,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:38:42,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:42,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:42,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:42,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:42,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:42,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:42,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:42,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:42,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:42,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:42,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:42,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:42,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:42,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:42,931 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:42,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2036722588] [2020-10-29 03:38:42,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:42,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:38:42,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343857004] [2020-10-29 03:38:42,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:38:42,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:42,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:38:42,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:38:42,934 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 30 states. [2020-10-29 03:38:43,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:43,150 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2020-10-29 03:38:43,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:38:43,151 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 41 [2020-10-29 03:38:43,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:43,151 INFO L225 Difference]: With dead ends: 60 [2020-10-29 03:38:43,151 INFO L226 Difference]: Without dead ends: 47 [2020-10-29 03:38:43,152 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:38:43,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-29 03:38:43,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-29 03:38:43,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:38:43,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-10-29 03:38:43,157 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 41 [2020-10-29 03:38:43,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:43,157 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-10-29 03:38:43,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:38:43,157 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-10-29 03:38:43,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 03:38:43,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:43,158 INFO L422 BasicCegarLoop]: trace histogram [27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:43,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:38:43,159 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:43,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:43,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1837989320, now seen corresponding path program 27 times [2020-10-29 03:38:43,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:43,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2073558646] [2020-10-29 03:38:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:43,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:43,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:43,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:38:43,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:43,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-29 03:38:43,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:43,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:38:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:43,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:38:43,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:44,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:44,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:44,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:44,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:44,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:44,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:44,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:44,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:44,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:44,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:44,509 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:44,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2073558646] [2020-10-29 03:38:44,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:44,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:38:44,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549540346] [2020-10-29 03:38:44,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:38:44,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:44,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:38:44,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:38:44,511 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 31 states. [2020-10-29 03:38:44,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:44,657 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2020-10-29 03:38:44,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:38:44,658 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 42 [2020-10-29 03:38:44,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:44,658 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:38:44,659 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:38:44,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:38:44,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:38:44,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-29 03:38:44,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:38:44,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-10-29 03:38:44,664 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 42 [2020-10-29 03:38:44,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:44,664 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-10-29 03:38:44,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:38:44,664 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-10-29 03:38:44,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:38:44,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:44,665 INFO L422 BasicCegarLoop]: trace histogram [28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:44,666 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:38:44,666 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:44,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:44,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1627380178, now seen corresponding path program 28 times [2020-10-29 03:38:44,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:44,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [114227520] [2020-10-29 03:38:44,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:44,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:44,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:45,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:45,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-29 03:38:45,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:45,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-29 03:38:45,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:45,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:38:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:45,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:38:45,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:46,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:46,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:46,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:46,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:46,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:46,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:46,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:38:46,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:46,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:46,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:46,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:46,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:46,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:46,243 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [114227520] [2020-10-29 03:38:46,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:46,244 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:38:46,244 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297321690] [2020-10-29 03:38:46,246 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:38:46,246 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:46,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:38:46,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:38:46,247 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 32 states. [2020-10-29 03:38:46,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:46,468 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-10-29 03:38:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:38:46,469 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 43 [2020-10-29 03:38:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:46,469 INFO L225 Difference]: With dead ends: 62 [2020-10-29 03:38:46,470 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 03:38:46,472 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:38:46,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 03:38:46,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-29 03:38:46,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:38:46,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-10-29 03:38:46,478 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 43 [2020-10-29 03:38:46,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:46,478 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-10-29 03:38:46,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:38:46,478 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-10-29 03:38:46,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-29 03:38:46,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:46,479 INFO L422 BasicCegarLoop]: trace histogram [29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:46,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:38:46,479 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:46,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:46,480 INFO L82 PathProgramCache]: Analyzing trace with hash 606535928, now seen corresponding path program 29 times [2020-10-29 03:38:46,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:46,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588059951] [2020-10-29 03:38:46,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:46,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:47,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:47,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:38:47,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 741 [2020-10-29 03:38:47,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:47,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:47,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:38:47,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:47,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:38:47,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:47,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:47,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:47,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:47,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:47,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:47,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:47,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:47,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:47,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:47,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:47,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:47,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:47,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:47,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588059951] [2020-10-29 03:38:47,997 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:47,997 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:38:47,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260309410] [2020-10-29 03:38:47,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:38:47,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:47,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:38:47,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:38:48,000 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 33 states. [2020-10-29 03:38:48,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:48,178 INFO L93 Difference]: Finished difference Result 63 states and 65 transitions. [2020-10-29 03:38:48,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:38:48,179 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 44 [2020-10-29 03:38:48,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:48,180 INFO L225 Difference]: With dead ends: 63 [2020-10-29 03:38:48,180 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 03:38:48,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:38:48,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 03:38:48,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-29 03:38:48,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 03:38:48,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-10-29 03:38:48,190 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 44 [2020-10-29 03:38:48,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:48,190 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-10-29 03:38:48,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:38:48,190 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-10-29 03:38:48,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 03:38:48,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:48,191 INFO L422 BasicCegarLoop]: trace histogram [30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:48,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:38:48,195 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:48,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:48,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1138458478, now seen corresponding path program 30 times [2020-10-29 03:38:48,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:48,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1162780171] [2020-10-29 03:38:48,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:48,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:48,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:48,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:38:48,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:48,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-10-29 03:38:48,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:48,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:38:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:49,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:38:49,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:49,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:49,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:49,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:49,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:49,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:49,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:49,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:49,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:49,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:49,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:49,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:49,797 INFO L134 CoverageAnalysis]: Checked inductivity of 465 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:49,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1162780171] [2020-10-29 03:38:49,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:49,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:38:49,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691473154] [2020-10-29 03:38:49,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:38:49,799 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:49,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:38:49,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:38:49,800 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 34 states. [2020-10-29 03:38:50,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:50,051 INFO L93 Difference]: Finished difference Result 64 states and 66 transitions. [2020-10-29 03:38:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:38:50,052 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 45 [2020-10-29 03:38:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:50,052 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:38:50,052 INFO L226 Difference]: Without dead ends: 51 [2020-10-29 03:38:50,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:38:50,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-29 03:38:50,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-29 03:38:50,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 03:38:50,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-10-29 03:38:50,063 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 45 [2020-10-29 03:38:50,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:50,063 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-10-29 03:38:50,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:38:50,063 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-10-29 03:38:50,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:38:50,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:50,064 INFO L422 BasicCegarLoop]: trace histogram [31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:50,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:38:50,065 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:50,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:50,066 INFO L82 PathProgramCache]: Analyzing trace with hash 448188344, now seen corresponding path program 31 times [2020-10-29 03:38:50,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:50,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561969140] [2020-10-29 03:38:50,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:50,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:50,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:50,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:50,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 03:38:50,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:50,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 793 [2020-10-29 03:38:50,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:50,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:50,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:38:50,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:50,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:38:50,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:51,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:51,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:51,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:51,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:51,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:51,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:51,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:51,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:51,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:51,786 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:51,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561969140] [2020-10-29 03:38:51,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:51,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:38:51,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828686770] [2020-10-29 03:38:51,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:38:51,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:51,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:38:51,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:38:51,789 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 35 states. [2020-10-29 03:38:52,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:52,092 INFO L93 Difference]: Finished difference Result 65 states and 67 transitions. [2020-10-29 03:38:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:38:52,092 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 46 [2020-10-29 03:38:52,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:52,094 INFO L225 Difference]: With dead ends: 65 [2020-10-29 03:38:52,094 INFO L226 Difference]: Without dead ends: 52 [2020-10-29 03:38:52,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:38:52,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-29 03:38:52,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-10-29 03:38:52,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-10-29 03:38:52,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2020-10-29 03:38:52,099 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 46 [2020-10-29 03:38:52,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:52,099 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2020-10-29 03:38:52,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:38:52,100 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2020-10-29 03:38:52,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:38:52,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:52,100 INFO L422 BasicCegarLoop]: trace histogram [32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:52,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:38:52,101 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:52,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:52,101 INFO L82 PathProgramCache]: Analyzing trace with hash 524650670, now seen corresponding path program 32 times [2020-10-29 03:38:52,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:52,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [955955924] [2020-10-29 03:38:52,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:52,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:52,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:52,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:52,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:38:52,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:52,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-29 03:38:52,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:52,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:38:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:52,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:38:52,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:53,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:53,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:53,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:53,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:53,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:53,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:53,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:38:53,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:53,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:53,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:53,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:53,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:53,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:53,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [955955924] [2020-10-29 03:38:53,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:53,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:38:53,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429101527] [2020-10-29 03:38:53,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:38:53,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:53,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:38:53,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:38:53,734 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand 36 states. [2020-10-29 03:38:54,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:54,029 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-10-29 03:38:54,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:38:54,030 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 47 [2020-10-29 03:38:54,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:54,030 INFO L225 Difference]: With dead ends: 66 [2020-10-29 03:38:54,030 INFO L226 Difference]: Without dead ends: 53 [2020-10-29 03:38:54,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:38:54,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-29 03:38:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-29 03:38:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-29 03:38:54,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-10-29 03:38:54,036 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 47 [2020-10-29 03:38:54,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:54,036 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-10-29 03:38:54,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:38:54,037 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-10-29 03:38:54,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:38:54,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:54,037 INFO L422 BasicCegarLoop]: trace histogram [33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:54,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:38:54,038 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:54,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:54,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1399984520, now seen corresponding path program 33 times [2020-10-29 03:38:54,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:54,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747690768] [2020-10-29 03:38:54,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:54,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:54,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:54,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 03:38:54,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 763 [2020-10-29 03:38:54,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:54,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:38:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:54,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:38:54,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:55,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:55,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:55,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:55,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:55,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:55,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:55,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:55,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:55,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:55,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:55,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:55,799 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:55,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747690768] [2020-10-29 03:38:55,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:55,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:38:55,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991039138] [2020-10-29 03:38:55,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:38:55,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:55,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:38:55,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:38:55,802 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 37 states. [2020-10-29 03:38:56,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:56,075 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-10-29 03:38:56,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:38:56,076 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 48 [2020-10-29 03:38:56,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:56,077 INFO L225 Difference]: With dead ends: 67 [2020-10-29 03:38:56,077 INFO L226 Difference]: Without dead ends: 54 [2020-10-29 03:38:56,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:38:56,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-29 03:38:56,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-10-29 03:38:56,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:38:56,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-10-29 03:38:56,083 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 48 [2020-10-29 03:38:56,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:56,084 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-10-29 03:38:56,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:38:56,084 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-10-29 03:38:56,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 03:38:56,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:56,084 INFO L422 BasicCegarLoop]: trace histogram [34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:56,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:38:56,085 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:56,085 INFO L82 PathProgramCache]: Analyzing trace with hash -934133266, now seen corresponding path program 34 times [2020-10-29 03:38:56,086 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:56,086 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2041944410] [2020-10-29 03:38:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:56,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:56,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:56,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:56,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-29 03:38:56,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 791 [2020-10-29 03:38:56,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:56,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:38:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:38:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:57,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:57,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:57,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:57,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:57,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:57,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:57,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:57,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:57,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:57,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:57,903 INFO L134 CoverageAnalysis]: Checked inductivity of 595 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:57,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2041944410] [2020-10-29 03:38:57,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:57,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:38:57,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616753299] [2020-10-29 03:38:57,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:38:57,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:57,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:38:57,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:38:57,905 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 38 states. [2020-10-29 03:38:58,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:38:58,155 INFO L93 Difference]: Finished difference Result 68 states and 70 transitions. [2020-10-29 03:38:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:38:58,156 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 49 [2020-10-29 03:38:58,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:38:58,156 INFO L225 Difference]: With dead ends: 68 [2020-10-29 03:38:58,156 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 03:38:58,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:38:58,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 03:38:58,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-29 03:38:58,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:38:58,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 56 transitions. [2020-10-29 03:38:58,162 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 56 transitions. Word has length 49 [2020-10-29 03:38:58,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:38:58,162 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 56 transitions. [2020-10-29 03:38:58,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:38:58,162 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 56 transitions. [2020-10-29 03:38:58,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-29 03:38:58,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:38:58,163 INFO L422 BasicCegarLoop]: trace histogram [35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:38:58,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:38:58,163 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:38:58,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:38:58,164 INFO L82 PathProgramCache]: Analyzing trace with hash 622353720, now seen corresponding path program 35 times [2020-10-29 03:38:58,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:38:58,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [412434023] [2020-10-29 03:38:58,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:38:58,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:58,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:58,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:58,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:38:58,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:58,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 717 [2020-10-29 03:38:58,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:58,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:58,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:38:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:38:58,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:38:58,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:59,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:38:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:38:59,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:38:59,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:38:59,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:38:59,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:38:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:38:59,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:38:59,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:38:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:38:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:38:59,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:38:59,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:38:59,964 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:38:59,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [412434023] [2020-10-29 03:38:59,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:38:59,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:38:59,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340421596] [2020-10-29 03:38:59,965 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:38:59,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:38:59,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:38:59,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:38:59,967 INFO L87 Difference]: Start difference. First operand 55 states and 56 transitions. Second operand 39 states. [2020-10-29 03:39:00,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:00,245 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2020-10-29 03:39:00,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:39:00,245 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 50 [2020-10-29 03:39:00,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:00,246 INFO L225 Difference]: With dead ends: 69 [2020-10-29 03:39:00,246 INFO L226 Difference]: Without dead ends: 56 [2020-10-29 03:39:00,247 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:39:00,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-29 03:39:00,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-29 03:39:00,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-29 03:39:00,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-10-29 03:39:00,251 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 50 [2020-10-29 03:39:00,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:00,252 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-10-29 03:39:00,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:39:00,252 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-10-29 03:39:00,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 03:39:00,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:00,253 INFO L422 BasicCegarLoop]: trace histogram [36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:00,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:39:00,253 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:00,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:00,253 INFO L82 PathProgramCache]: Analyzing trace with hash 1628810030, now seen corresponding path program 36 times [2020-10-29 03:39:00,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:00,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487618236] [2020-10-29 03:39:00,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:00,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:00,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:01,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:01,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 03:39:01,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:01,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 872 [2020-10-29 03:39:01,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:01,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:39:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:01,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:39:01,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:02,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:02,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:02,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:02,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:02,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:02,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:02,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:02,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 666 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:02,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487618236] [2020-10-29 03:39:02,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:02,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:39:02,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631633439] [2020-10-29 03:39:02,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:39:02,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:02,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:39:02,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:39:02,215 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 40 states. [2020-10-29 03:39:02,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:02,494 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-10-29 03:39:02,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:39:02,495 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 51 [2020-10-29 03:39:02,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:02,496 INFO L225 Difference]: With dead ends: 70 [2020-10-29 03:39:02,496 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:39:02,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:39:02,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:39:02,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-29 03:39:02,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-29 03:39:02,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-10-29 03:39:02,507 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 51 [2020-10-29 03:39:02,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:02,508 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-10-29 03:39:02,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:39:02,508 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-10-29 03:39:02,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 03:39:02,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:02,509 INFO L422 BasicCegarLoop]: trace histogram [37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:02,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:39:02,509 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:02,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:02,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1530782728, now seen corresponding path program 37 times [2020-10-29 03:39:02,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:02,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443751082] [2020-10-29 03:39:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:02,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:02,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:03,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:03,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:39:03,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:03,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1132 [2020-10-29 03:39:03,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:03,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-29 03:39:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:03,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 03:39:03,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:04,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:04,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:04,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:04,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:04,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:04,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:04,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:04,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:04,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:04,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:04,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 703 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:04,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443751082] [2020-10-29 03:39:04,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:04,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [41] total 41 [2020-10-29 03:39:04,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851761654] [2020-10-29 03:39:04,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 41 states [2020-10-29 03:39:04,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:04,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2020-10-29 03:39:04,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:39:04,758 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 41 states. [2020-10-29 03:39:05,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:05,084 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2020-10-29 03:39:05,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:39:05,085 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 52 [2020-10-29 03:39:05,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:05,086 INFO L225 Difference]: With dead ends: 71 [2020-10-29 03:39:05,086 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:39:05,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=782, Invalid=858, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:39:05,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:39:05,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-10-29 03:39:05,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 03:39:05,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-10-29 03:39:05,092 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 52 [2020-10-29 03:39:05,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:05,093 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-10-29 03:39:05,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 41 states. [2020-10-29 03:39:05,093 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-10-29 03:39:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-29 03:39:05,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:05,093 INFO L422 BasicCegarLoop]: trace histogram [38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:05,094 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:39:05,094 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:05,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:05,094 INFO L82 PathProgramCache]: Analyzing trace with hash -693910418, now seen corresponding path program 38 times [2020-10-29 03:39:05,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:05,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1040440078] [2020-10-29 03:39:05,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:05,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:06,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:06,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-29 03:39:06,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 933 [2020-10-29 03:39:06,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:06,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-29 03:39:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:06,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:39:06,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:07,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:07,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:07,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:07,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:07,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:07,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:07,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:07,311 INFO L134 CoverageAnalysis]: Checked inductivity of 741 backedges. 0 proven. 741 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:07,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1040440078] [2020-10-29 03:39:07,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:07,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:39:07,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863866517] [2020-10-29 03:39:07,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:39:07,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:07,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:39:07,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:39:07,314 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 42 states. [2020-10-29 03:39:07,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:07,455 INFO L93 Difference]: Finished difference Result 72 states and 74 transitions. [2020-10-29 03:39:07,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-29 03:39:07,456 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 53 [2020-10-29 03:39:07,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:07,457 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:39:07,457 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 03:39:07,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=822, Invalid=900, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:39:07,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 03:39:07,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-29 03:39:07,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-29 03:39:07,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-10-29 03:39:07,463 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 53 [2020-10-29 03:39:07,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:07,463 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-10-29 03:39:07,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:39:07,463 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-10-29 03:39:07,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:39:07,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:07,464 INFO L422 BasicCegarLoop]: trace histogram [39, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:07,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:39:07,464 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:07,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:07,465 INFO L82 PathProgramCache]: Analyzing trace with hash -520672584, now seen corresponding path program 39 times [2020-10-29 03:39:07,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:07,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752552010] [2020-10-29 03:39:07,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:07,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:08,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:08,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 03:39:08,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:08,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-10-29 03:39:08,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:08,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-29 03:39:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:08,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 03:39:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:39:09,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:09,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:09,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:09,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:09,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:09,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:09,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:09,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:09,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:09,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:09,811 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 0 proven. 780 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:09,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752552010] [2020-10-29 03:39:09,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:09,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [43] total 43 [2020-10-29 03:39:09,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772910064] [2020-10-29 03:39:09,812 INFO L461 AbstractCegarLoop]: Interpolant automaton has 43 states [2020-10-29 03:39:09,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:09,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2020-10-29 03:39:09,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:39:09,813 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 43 states. [2020-10-29 03:39:10,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:10,099 INFO L93 Difference]: Finished difference Result 73 states and 75 transitions. [2020-10-29 03:39:10,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-10-29 03:39:10,100 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 54 [2020-10-29 03:39:10,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:10,101 INFO L225 Difference]: With dead ends: 73 [2020-10-29 03:39:10,101 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:39:10,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=863, Invalid=943, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:39:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:39:10,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-29 03:39:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-29 03:39:10,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 61 transitions. [2020-10-29 03:39:10,107 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 61 transitions. Word has length 54 [2020-10-29 03:39:10,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:10,107 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 61 transitions. [2020-10-29 03:39:10,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 43 states. [2020-10-29 03:39:10,107 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 61 transitions. [2020-10-29 03:39:10,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 03:39:10,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:10,108 INFO L422 BasicCegarLoop]: trace histogram [40, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:10,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:39:10,108 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:10,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:10,108 INFO L82 PathProgramCache]: Analyzing trace with hash 554732974, now seen corresponding path program 40 times [2020-10-29 03:39:10,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:10,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543937063] [2020-10-29 03:39:10,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:10,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:10,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:10,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 03:39:10,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:10,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 724 [2020-10-29 03:39:10,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:10,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:10,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-29 03:39:10,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:10,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:39:10,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:12,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:12,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:12,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:12,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:12,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:12,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:12,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:12,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:12,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:12,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:12,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:12,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:12,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:12,207 INFO L134 CoverageAnalysis]: Checked inductivity of 820 backedges. 0 proven. 820 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:12,207 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543937063] [2020-10-29 03:39:12,207 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:12,207 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [44] total 44 [2020-10-29 03:39:12,207 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630191759] [2020-10-29 03:39:12,208 INFO L461 AbstractCegarLoop]: Interpolant automaton has 44 states [2020-10-29 03:39:12,208 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:12,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2020-10-29 03:39:12,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:39:12,209 INFO L87 Difference]: Start difference. First operand 60 states and 61 transitions. Second operand 44 states. [2020-10-29 03:39:12,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:12,548 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2020-10-29 03:39:12,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 03:39:12,549 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 55 [2020-10-29 03:39:12,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:12,550 INFO L225 Difference]: With dead ends: 74 [2020-10-29 03:39:12,551 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 03:39:12,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=905, Invalid=987, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:39:12,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 03:39:12,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-10-29 03:39:12,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-29 03:39:12,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-10-29 03:39:12,557 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 55 [2020-10-29 03:39:12,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:12,557 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-10-29 03:39:12,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 44 states. [2020-10-29 03:39:12,557 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-10-29 03:39:12,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:39:12,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:12,558 INFO L422 BasicCegarLoop]: trace histogram [41, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:12,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:39:12,558 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:12,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:12,558 INFO L82 PathProgramCache]: Analyzing trace with hash -467433096, now seen corresponding path program 41 times [2020-10-29 03:39:12,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:12,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576694152] [2020-10-29 03:39:12,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:12,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:12,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:13,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:13,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-29 03:39:13,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:13,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-10-29 03:39:13,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:13,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-10-29 03:39:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:13,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 03:39:13,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:15,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:15,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:15,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:15,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:15,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:15,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:15,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:15,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:15,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:15,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:15,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:15,012 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 0 proven. 861 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:15,012 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576694152] [2020-10-29 03:39:15,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:15,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [45] total 45 [2020-10-29 03:39:15,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534729319] [2020-10-29 03:39:15,013 INFO L461 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-10-29 03:39:15,013 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:15,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-10-29 03:39:15,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:39:15,015 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 45 states. [2020-10-29 03:39:15,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:15,268 INFO L93 Difference]: Finished difference Result 75 states and 77 transitions. [2020-10-29 03:39:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 03:39:15,268 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 56 [2020-10-29 03:39:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:15,269 INFO L225 Difference]: With dead ends: 75 [2020-10-29 03:39:15,269 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:39:15,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=948, Invalid=1032, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:39:15,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:39:15,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-29 03:39:15,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-29 03:39:15,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-10-29 03:39:15,275 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 56 [2020-10-29 03:39:15,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:15,275 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-10-29 03:39:15,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-10-29 03:39:15,275 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-10-29 03:39:15,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:39:15,276 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:15,276 INFO L422 BasicCegarLoop]: trace histogram [42, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:15,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:39:15,276 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:15,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:15,276 INFO L82 PathProgramCache]: Analyzing trace with hash -2089810194, now seen corresponding path program 42 times [2020-10-29 03:39:15,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:15,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [676311498] [2020-10-29 03:39:15,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:15,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:16,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:16,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 03:39:16,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:16,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-10-29 03:39:16,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:16,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 44 [2020-10-29 03:39:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:16,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:39:16,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:17,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:17,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:17,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:17,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:17,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:17,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:17,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:39:17,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:17,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:17,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:17,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:17,738 INFO L134 CoverageAnalysis]: Checked inductivity of 903 backedges. 0 proven. 903 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:17,738 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [676311498] [2020-10-29 03:39:17,738 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:17,738 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [46] total 46 [2020-10-29 03:39:17,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506631123] [2020-10-29 03:39:17,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-10-29 03:39:17,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:17,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-10-29 03:39:17,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:39:17,740 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 46 states. [2020-10-29 03:39:17,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:17,904 INFO L93 Difference]: Finished difference Result 76 states and 78 transitions. [2020-10-29 03:39:17,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-29 03:39:17,905 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 57 [2020-10-29 03:39:17,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:17,906 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:39:17,906 INFO L226 Difference]: Without dead ends: 63 [2020-10-29 03:39:17,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=992, Invalid=1078, Unknown=0, NotChecked=0, Total=2070 [2020-10-29 03:39:17,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-29 03:39:17,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-10-29 03:39:17,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-29 03:39:17,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-10-29 03:39:17,912 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 57 [2020-10-29 03:39:17,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:17,912 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-10-29 03:39:17,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-10-29 03:39:17,912 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-10-29 03:39:17,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 03:39:17,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:17,913 INFO L422 BasicCegarLoop]: trace histogram [43, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:17,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 03:39:17,913 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:17,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:17,914 INFO L82 PathProgramCache]: Analyzing trace with hash -843892680, now seen corresponding path program 43 times [2020-10-29 03:39:17,914 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:17,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [454943293] [2020-10-29 03:39:17,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:17,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:17,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:18,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:18,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:39:18,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:18,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 873 [2020-10-29 03:39:18,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:18,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 45 [2020-10-29 03:39:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:18,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 03:39:18,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:20,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:20,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:20,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:20,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:20,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:20,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:20,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:20,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:20,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:20,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:20,368 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:20,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [454943293] [2020-10-29 03:39:20,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:20,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [47] total 47 [2020-10-29 03:39:20,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692077224] [2020-10-29 03:39:20,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 47 states [2020-10-29 03:39:20,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:20,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2020-10-29 03:39:20,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:39:20,370 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 47 states. [2020-10-29 03:39:20,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:20,733 INFO L93 Difference]: Finished difference Result 77 states and 79 transitions. [2020-10-29 03:39:20,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-29 03:39:20,734 INFO L78 Accepts]: Start accepts. Automaton has 47 states. Word has length 58 [2020-10-29 03:39:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:20,735 INFO L225 Difference]: With dead ends: 77 [2020-10-29 03:39:20,735 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 03:39:20,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1037, Invalid=1125, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:39:20,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 03:39:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2020-10-29 03:39:20,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-29 03:39:20,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 65 transitions. [2020-10-29 03:39:20,741 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 65 transitions. Word has length 58 [2020-10-29 03:39:20,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:20,742 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 65 transitions. [2020-10-29 03:39:20,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 47 states. [2020-10-29 03:39:20,742 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 65 transitions. [2020-10-29 03:39:20,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:39:20,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:20,742 INFO L422 BasicCegarLoop]: trace histogram [44, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:20,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 03:39:20,743 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:20,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:20,743 INFO L82 PathProgramCache]: Analyzing trace with hash -875155410, now seen corresponding path program 44 times [2020-10-29 03:39:20,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:20,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403390550] [2020-10-29 03:39:20,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:20,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:21,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:21,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-29 03:39:21,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:21,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 886 [2020-10-29 03:39:21,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:21,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:21,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-29 03:39:21,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:21,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 03:39:21,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:23,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:23,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:23,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:23,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:23,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:23,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:23,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:23,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:23,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:23,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:23,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 0 proven. 990 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:23,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403390550] [2020-10-29 03:39:23,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:23,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48] total 48 [2020-10-29 03:39:23,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445126666] [2020-10-29 03:39:23,221 INFO L461 AbstractCegarLoop]: Interpolant automaton has 48 states [2020-10-29 03:39:23,221 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:23,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2020-10-29 03:39:23,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:39:23,222 INFO L87 Difference]: Start difference. First operand 64 states and 65 transitions. Second operand 48 states. [2020-10-29 03:39:23,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:23,558 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2020-10-29 03:39:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 03:39:23,559 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 59 [2020-10-29 03:39:23,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:23,560 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:39:23,560 INFO L226 Difference]: Without dead ends: 65 [2020-10-29 03:39:23,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1083, Invalid=1173, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:39:23,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-29 03:39:23,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-29 03:39:23,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-29 03:39:23,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-10-29 03:39:23,566 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 59 [2020-10-29 03:39:23,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:23,566 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-10-29 03:39:23,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 48 states. [2020-10-29 03:39:23,566 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-10-29 03:39:23,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-29 03:39:23,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:23,567 INFO L422 BasicCegarLoop]: trace histogram [45, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:23,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 03:39:23,567 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:23,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:23,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1844300040, now seen corresponding path program 45 times [2020-10-29 03:39:23,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:23,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1061952629] [2020-10-29 03:39:23,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:23,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:23,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:24,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:24,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:39:24,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:24,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-10-29 03:39:24,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:24,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:24,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-10-29 03:39:24,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:24,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:39:24,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:26,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:26,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:26,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:26,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:26,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:26,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:26,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:26,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:26,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1035 backedges. 0 proven. 1035 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:26,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1061952629] [2020-10-29 03:39:26,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:26,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49] total 49 [2020-10-29 03:39:26,274 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74231251] [2020-10-29 03:39:26,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 49 states [2020-10-29 03:39:26,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:26,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2020-10-29 03:39:26,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:39:26,275 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 49 states. [2020-10-29 03:39:26,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:26,528 INFO L93 Difference]: Finished difference Result 79 states and 81 transitions. [2020-10-29 03:39:26,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-29 03:39:26,529 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 60 [2020-10-29 03:39:26,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:26,530 INFO L225 Difference]: With dead ends: 79 [2020-10-29 03:39:26,530 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:39:26,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1130, Invalid=1222, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:39:26,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:39:26,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-29 03:39:26,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:39:26,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-10-29 03:39:26,536 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 60 [2020-10-29 03:39:26,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:26,537 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-10-29 03:39:26,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 49 states. [2020-10-29 03:39:26,537 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-10-29 03:39:26,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 03:39:26,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:26,538 INFO L422 BasicCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:26,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 03:39:26,538 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:26,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:26,538 INFO L82 PathProgramCache]: Analyzing trace with hash -1823012498, now seen corresponding path program 46 times [2020-10-29 03:39:26,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:26,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [513909952] [2020-10-29 03:39:26,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:26,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:26,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:27,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:27,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:39:27,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 931 [2020-10-29 03:39:27,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:27,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:27,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-10-29 03:39:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:39:27,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:29,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:29,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:29,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:29,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:29,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:29,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:29,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:29,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:29,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:29,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:29,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:29,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:29,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [513909952] [2020-10-29 03:39:29,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:29,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [50] total 50 [2020-10-29 03:39:29,249 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475335712] [2020-10-29 03:39:29,249 INFO L461 AbstractCegarLoop]: Interpolant automaton has 50 states [2020-10-29 03:39:29,249 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:29,250 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2020-10-29 03:39:29,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:39:29,250 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 50 states. [2020-10-29 03:39:29,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:29,478 INFO L93 Difference]: Finished difference Result 80 states and 82 transitions. [2020-10-29 03:39:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-29 03:39:29,478 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 61 [2020-10-29 03:39:29,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:29,479 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:39:29,480 INFO L226 Difference]: Without dead ends: 67 [2020-10-29 03:39:29,480 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1178, Invalid=1272, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 03:39:29,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-29 03:39:29,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-29 03:39:29,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-29 03:39:29,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 68 transitions. [2020-10-29 03:39:29,485 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 68 transitions. Word has length 61 [2020-10-29 03:39:29,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:29,485 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 68 transitions. [2020-10-29 03:39:29,485 INFO L482 AbstractCegarLoop]: Interpolant automaton has 50 states. [2020-10-29 03:39:29,485 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 68 transitions. [2020-10-29 03:39:29,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:39:29,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:29,486 INFO L422 BasicCegarLoop]: trace histogram [47, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:29,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 03:39:29,486 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:29,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:29,487 INFO L82 PathProgramCache]: Analyzing trace with hash -1163098696, now seen corresponding path program 47 times [2020-10-29 03:39:29,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:29,487 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1898110406] [2020-10-29 03:39:29,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:29,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:29,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:30,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:30,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:39:30,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:30,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1170 [2020-10-29 03:39:30,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:30,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 49 [2020-10-29 03:39:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:30,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-29 03:39:30,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:39:32,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:32,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:32,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:32,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:32,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:32,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:32,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:32,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:32,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:32,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:32,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:32,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1128 backedges. 0 proven. 1128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:32,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1898110406] [2020-10-29 03:39:32,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:32,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [51] total 51 [2020-10-29 03:39:32,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624788584] [2020-10-29 03:39:32,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 51 states [2020-10-29 03:39:32,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:32,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2020-10-29 03:39:32,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:39:32,453 INFO L87 Difference]: Start difference. First operand 67 states and 68 transitions. Second operand 51 states. [2020-10-29 03:39:32,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:32,833 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2020-10-29 03:39:32,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-10-29 03:39:32,834 INFO L78 Accepts]: Start accepts. Automaton has 51 states. Word has length 62 [2020-10-29 03:39:32,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:32,835 INFO L225 Difference]: With dead ends: 81 [2020-10-29 03:39:32,836 INFO L226 Difference]: Without dead ends: 68 [2020-10-29 03:39:32,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1227, Invalid=1323, Unknown=0, NotChecked=0, Total=2550 [2020-10-29 03:39:32,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-29 03:39:32,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-29 03:39:32,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-29 03:39:32,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-10-29 03:39:32,845 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 62 [2020-10-29 03:39:32,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:32,845 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-10-29 03:39:32,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 51 states. [2020-10-29 03:39:32,845 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-10-29 03:39:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-29 03:39:32,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:32,846 INFO L422 BasicCegarLoop]: trace histogram [48, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:32,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 03:39:32,846 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:32,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:32,846 INFO L82 PathProgramCache]: Analyzing trace with hash 2114359982, now seen corresponding path program 48 times [2020-10-29 03:39:32,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:32,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [620492414] [2020-10-29 03:39:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:32,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:33,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:33,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 03:39:33,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:33,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1026 [2020-10-29 03:39:33,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:33,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:33,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-10-29 03:39:33,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:33,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:39:33,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:35,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:35,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:35,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:35,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:35,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:35,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:35,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:35,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:35,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1176 backedges. 0 proven. 1176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:35,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [620492414] [2020-10-29 03:39:35,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:35,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [52] total 52 [2020-10-29 03:39:35,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2054605276] [2020-10-29 03:39:35,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-10-29 03:39:35,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:35,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-10-29 03:39:35,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:39:35,809 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 52 states. [2020-10-29 03:39:36,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:36,071 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-10-29 03:39:36,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 03:39:36,071 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 63 [2020-10-29 03:39:36,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:36,073 INFO L225 Difference]: With dead ends: 82 [2020-10-29 03:39:36,073 INFO L226 Difference]: Without dead ends: 69 [2020-10-29 03:39:36,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1277, Invalid=1375, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:39:36,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-29 03:39:36,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-10-29 03:39:36,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-29 03:39:36,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-10-29 03:39:36,079 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 63 [2020-10-29 03:39:36,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:36,079 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-10-29 03:39:36,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-10-29 03:39:36,079 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-10-29 03:39:36,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:39:36,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:36,080 INFO L422 BasicCegarLoop]: trace histogram [49, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:36,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 03:39:36,080 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:36,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:36,081 INFO L82 PathProgramCache]: Analyzing trace with hash 636363896, now seen corresponding path program 49 times [2020-10-29 03:39:36,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:36,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1996396956] [2020-10-29 03:39:36,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:36,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:36,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:37,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:37,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 03:39:37,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:37,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-29 03:39:37,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:37,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-29 03:39:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:37,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-29 03:39:37,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:39,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:39,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:39,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:39,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:39,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:39,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:39,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:39,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:39,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1225 backedges. 0 proven. 1225 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:39,211 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1996396956] [2020-10-29 03:39:39,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:39,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [53] total 53 [2020-10-29 03:39:39,212 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63014157] [2020-10-29 03:39:39,212 INFO L461 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-10-29 03:39:39,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:39,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-10-29 03:39:39,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:39:39,213 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 53 states. [2020-10-29 03:39:39,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:39,605 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2020-10-29 03:39:39,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2020-10-29 03:39:39,605 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 64 [2020-10-29 03:39:39,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:39,606 INFO L225 Difference]: With dead ends: 83 [2020-10-29 03:39:39,606 INFO L226 Difference]: Without dead ends: 70 [2020-10-29 03:39:39,607 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1328, Invalid=1428, Unknown=0, NotChecked=0, Total=2756 [2020-10-29 03:39:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-29 03:39:39,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-10-29 03:39:39,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-29 03:39:39,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-10-29 03:39:39,612 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 64 [2020-10-29 03:39:39,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:39,612 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-10-29 03:39:39,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-10-29 03:39:39,612 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-10-29 03:39:39,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:39:39,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:39,613 INFO L422 BasicCegarLoop]: trace histogram [50, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:39,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 03:39:39,613 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:39,614 INFO L82 PathProgramCache]: Analyzing trace with hash 2063125486, now seen corresponding path program 50 times [2020-10-29 03:39:39,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:39,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246618] [2020-10-29 03:39:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:39,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:40,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:40,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:39:40,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:40,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1141 [2020-10-29 03:39:40,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:40,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:40,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-29 03:39:40,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:40,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 03:39:40,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:42,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:42,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:42,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:42,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:42,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:42,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:42,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:42,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:42,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:42,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:42,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:42,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:42,858 INFO L134 CoverageAnalysis]: Checked inductivity of 1275 backedges. 0 proven. 1275 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:42,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246618] [2020-10-29 03:39:42,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:42,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [54] total 54 [2020-10-29 03:39:42,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774205253] [2020-10-29 03:39:42,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 54 states [2020-10-29 03:39:42,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:42,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2020-10-29 03:39:42,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:39:42,860 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 54 states. [2020-10-29 03:39:43,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:43,271 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2020-10-29 03:39:43,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-29 03:39:43,272 INFO L78 Accepts]: Start accepts. Automaton has 54 states. Word has length 65 [2020-10-29 03:39:43,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:43,273 INFO L225 Difference]: With dead ends: 84 [2020-10-29 03:39:43,273 INFO L226 Difference]: Without dead ends: 71 [2020-10-29 03:39:43,274 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1380, Invalid=1482, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:39:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-29 03:39:43,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-29 03:39:43,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-29 03:39:43,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-10-29 03:39:43,279 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 65 [2020-10-29 03:39:43,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:43,279 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-10-29 03:39:43,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 54 states. [2020-10-29 03:39:43,280 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-10-29 03:39:43,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-29 03:39:43,280 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:43,280 INFO L422 BasicCegarLoop]: trace histogram [51, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:43,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 03:39:43,281 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:43,281 INFO L82 PathProgramCache]: Analyzing trace with hash -951905480, now seen corresponding path program 51 times [2020-10-29 03:39:43,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:43,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1711361915] [2020-10-29 03:39:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:43,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:43,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:44,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:44,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 03:39:44,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:44,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1200 [2020-10-29 03:39:44,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:44,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 53 [2020-10-29 03:39:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:44,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 03:39:44,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:46,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:46,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:46,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:46,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:46,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:46,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:39:46,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:46,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:46,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:46,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:46,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:46,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1326 backedges. 0 proven. 1326 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:46,668 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1711361915] [2020-10-29 03:39:46,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:46,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [55] total 55 [2020-10-29 03:39:46,671 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982937679] [2020-10-29 03:39:46,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 55 states [2020-10-29 03:39:46,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:46,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2020-10-29 03:39:46,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:39:46,674 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 55 states. [2020-10-29 03:39:46,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:46,828 INFO L93 Difference]: Finished difference Result 85 states and 87 transitions. [2020-10-29 03:39:46,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-29 03:39:46,828 INFO L78 Accepts]: Start accepts. Automaton has 55 states. Word has length 66 [2020-10-29 03:39:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:46,830 INFO L225 Difference]: With dead ends: 85 [2020-10-29 03:39:46,830 INFO L226 Difference]: Without dead ends: 72 [2020-10-29 03:39:46,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1433, Invalid=1537, Unknown=0, NotChecked=0, Total=2970 [2020-10-29 03:39:46,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-29 03:39:46,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-10-29 03:39:46,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-29 03:39:46,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 73 transitions. [2020-10-29 03:39:46,841 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 73 transitions. Word has length 66 [2020-10-29 03:39:46,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:46,842 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 73 transitions. [2020-10-29 03:39:46,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 55 states. [2020-10-29 03:39:46,842 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 73 transitions. [2020-10-29 03:39:46,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:39:46,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:46,843 INFO L422 BasicCegarLoop]: trace histogram [52, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:46,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 03:39:46,843 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:46,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:46,844 INFO L82 PathProgramCache]: Analyzing trace with hash 71415086, now seen corresponding path program 52 times [2020-10-29 03:39:46,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:46,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972758765] [2020-10-29 03:39:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:46,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:48,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:48,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 03:39:48,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:48,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1239 [2020-10-29 03:39:48,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:48,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-29 03:39:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:48,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:39:48,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:50,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:50,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:50,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:50,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:50,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:50,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:50,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:50,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:50,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:50,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:50,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:50,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:50,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1378 backedges. 0 proven. 1378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:50,325 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972758765] [2020-10-29 03:39:50,325 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:50,325 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [56] total 56 [2020-10-29 03:39:50,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320823925] [2020-10-29 03:39:50,326 INFO L461 AbstractCegarLoop]: Interpolant automaton has 56 states [2020-10-29 03:39:50,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:50,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2020-10-29 03:39:50,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:39:50,327 INFO L87 Difference]: Start difference. First operand 72 states and 73 transitions. Second operand 56 states. [2020-10-29 03:39:50,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:50,739 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-10-29 03:39:50,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 03:39:50,740 INFO L78 Accepts]: Start accepts. Automaton has 56 states. Word has length 67 [2020-10-29 03:39:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:50,741 INFO L225 Difference]: With dead ends: 86 [2020-10-29 03:39:50,741 INFO L226 Difference]: Without dead ends: 73 [2020-10-29 03:39:50,742 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1487, Invalid=1593, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:39:50,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-29 03:39:50,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-10-29 03:39:50,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:39:50,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-10-29 03:39:50,750 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 67 [2020-10-29 03:39:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:50,750 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-10-29 03:39:50,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 56 states. [2020-10-29 03:39:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-10-29 03:39:50,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-29 03:39:50,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:50,751 INFO L422 BasicCegarLoop]: trace histogram [53, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:50,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 03:39:50,752 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:50,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:50,752 INFO L82 PathProgramCache]: Analyzing trace with hash 1729581560, now seen corresponding path program 53 times [2020-10-29 03:39:50,752 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:50,752 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872607946] [2020-10-29 03:39:50,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:50,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:52,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:52,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:39:52,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1375 [2020-10-29 03:39:52,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:52,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 55 [2020-10-29 03:39:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 03:39:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:54,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:54,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:54,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:54,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:54,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:54,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:54,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:39:54,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:54,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:54,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:54,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:54,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1431 backedges. 0 proven. 1431 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:54,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872607946] [2020-10-29 03:39:54,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:54,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57] total 57 [2020-10-29 03:39:54,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479414261] [2020-10-29 03:39:54,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 57 states [2020-10-29 03:39:54,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:54,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2020-10-29 03:39:54,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:39:54,465 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 57 states. [2020-10-29 03:39:54,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:54,894 INFO L93 Difference]: Finished difference Result 87 states and 89 transitions. [2020-10-29 03:39:54,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-29 03:39:54,895 INFO L78 Accepts]: Start accepts. Automaton has 57 states. Word has length 68 [2020-10-29 03:39:54,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:54,896 INFO L225 Difference]: With dead ends: 87 [2020-10-29 03:39:54,896 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:39:54,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=1542, Invalid=1650, Unknown=0, NotChecked=0, Total=3192 [2020-10-29 03:39:54,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:39:54,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-29 03:39:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-29 03:39:54,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-10-29 03:39:54,901 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 68 [2020-10-29 03:39:54,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:54,902 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-10-29 03:39:54,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 57 states. [2020-10-29 03:39:54,902 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-10-29 03:39:54,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-29 03:39:54,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:54,903 INFO L422 BasicCegarLoop]: trace histogram [54, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:54,903 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 03:39:54,903 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:54,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:54,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1593134702, now seen corresponding path program 54 times [2020-10-29 03:39:54,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:54,904 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831672749] [2020-10-29 03:39:54,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:54,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:54,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:56,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:56,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 03:39:56,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:56,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1319 [2020-10-29 03:39:56,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:56,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 56 [2020-10-29 03:39:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:39:56,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:39:56,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:58,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:39:58,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:58,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:39:58,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:39:58,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:39:58,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:39:58,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:39:58,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:39:58,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:39:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:39:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:39:58,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:39:58,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:39:58,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1485 backedges. 0 proven. 1485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:39:58,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831672749] [2020-10-29 03:39:58,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:39:58,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [58] total 58 [2020-10-29 03:39:58,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125687067] [2020-10-29 03:39:58,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 58 states [2020-10-29 03:39:58,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:39:58,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2020-10-29 03:39:58,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:39:58,623 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 58 states. [2020-10-29 03:39:58,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:39:58,940 INFO L93 Difference]: Finished difference Result 88 states and 90 transitions. [2020-10-29 03:39:58,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-29 03:39:58,941 INFO L78 Accepts]: Start accepts. Automaton has 58 states. Word has length 69 [2020-10-29 03:39:58,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:39:58,942 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:39:58,942 INFO L226 Difference]: Without dead ends: 75 [2020-10-29 03:39:58,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=1598, Invalid=1708, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 03:39:58,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-29 03:39:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2020-10-29 03:39:58,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 03:39:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 76 transitions. [2020-10-29 03:39:58,946 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 76 transitions. Word has length 69 [2020-10-29 03:39:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:39:58,946 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 76 transitions. [2020-10-29 03:39:58,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 58 states. [2020-10-29 03:39:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 76 transitions. [2020-10-29 03:39:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:39:58,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:39:58,947 INFO L422 BasicCegarLoop]: trace histogram [55, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:39:58,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-29 03:39:58,947 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:39:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:39:58,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1658249400, now seen corresponding path program 55 times [2020-10-29 03:39:58,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:39:58,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1895445694] [2020-10-29 03:39:58,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:39:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:39:58,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:00,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:00,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:40:00,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:00,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1323 [2020-10-29 03:40:00,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:00,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:00,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 57 [2020-10-29 03:40:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:00,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 03:40:00,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:02,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:02,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:02,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:02,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:02,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:02,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:02,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:02,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:02,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:02,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:02,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:02,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:02,756 INFO L134 CoverageAnalysis]: Checked inductivity of 1540 backedges. 0 proven. 1540 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:40:02,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1895445694] [2020-10-29 03:40:02,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:02,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [59] total 59 [2020-10-29 03:40:02,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676892652] [2020-10-29 03:40:02,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 59 states [2020-10-29 03:40:02,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:02,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2020-10-29 03:40:02,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:40:02,758 INFO L87 Difference]: Start difference. First operand 75 states and 76 transitions. Second operand 59 states. [2020-10-29 03:40:02,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:02,938 INFO L93 Difference]: Finished difference Result 89 states and 91 transitions. [2020-10-29 03:40:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2020-10-29 03:40:02,939 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 70 [2020-10-29 03:40:02,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:02,940 INFO L225 Difference]: With dead ends: 89 [2020-10-29 03:40:02,940 INFO L226 Difference]: Without dead ends: 76 [2020-10-29 03:40:02,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1655, Invalid=1767, Unknown=0, NotChecked=0, Total=3422 [2020-10-29 03:40:02,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-29 03:40:02,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-10-29 03:40:02,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-10-29 03:40:02,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2020-10-29 03:40:02,945 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 70 [2020-10-29 03:40:02,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:02,945 INFO L481 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2020-10-29 03:40:02,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 59 states. [2020-10-29 03:40:02,945 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2020-10-29 03:40:02,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-29 03:40:02,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:02,946 INFO L422 BasicCegarLoop]: trace histogram [56, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:02,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-29 03:40:02,946 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:02,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:02,947 INFO L82 PathProgramCache]: Analyzing trace with hash -618162258, now seen corresponding path program 56 times [2020-10-29 03:40:02,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:02,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [368374188] [2020-10-29 03:40:02,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:02,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:04,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:04,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 03:40:04,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:04,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-29 03:40:04,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:04,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-29 03:40:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:04,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 03:40:04,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:06,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:06,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:06,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:06,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:06,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:06,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:06,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:06,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:06,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:06,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1596 backedges. 0 proven. 1596 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:40:06,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [368374188] [2020-10-29 03:40:06,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:06,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [60] total 60 [2020-10-29 03:40:06,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309573668] [2020-10-29 03:40:06,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 60 states [2020-10-29 03:40:06,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:06,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2020-10-29 03:40:06,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 03:40:06,908 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 60 states. [2020-10-29 03:40:07,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:07,389 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-10-29 03:40:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2020-10-29 03:40:07,390 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 71 [2020-10-29 03:40:07,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:07,391 INFO L225 Difference]: With dead ends: 90 [2020-10-29 03:40:07,391 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 03:40:07,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=1713, Invalid=1827, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 03:40:07,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 03:40:07,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-29 03:40:07,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-29 03:40:07,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2020-10-29 03:40:07,396 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 71 [2020-10-29 03:40:07,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:07,396 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2020-10-29 03:40:07,396 INFO L482 AbstractCegarLoop]: Interpolant automaton has 60 states. [2020-10-29 03:40:07,396 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2020-10-29 03:40:07,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:40:07,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:07,397 INFO L422 BasicCegarLoop]: trace histogram [57, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:07,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-29 03:40:07,397 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:07,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:07,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1827520376, now seen corresponding path program 57 times [2020-10-29 03:40:07,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:07,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258986810] [2020-10-29 03:40:07,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:07,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:07,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:08,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:08,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:40:08,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1421 [2020-10-29 03:40:08,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:08,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 59 [2020-10-29 03:40:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:08,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 03:40:08,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:11,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:11,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:11,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:11,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:11,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:11,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:11,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:11,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:11,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:11,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:11,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:11,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:11,517 INFO L134 CoverageAnalysis]: Checked inductivity of 1653 backedges. 0 proven. 1653 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:40:11,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258986810] [2020-10-29 03:40:11,517 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:11,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61] total 61 [2020-10-29 03:40:11,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254312027] [2020-10-29 03:40:11,518 INFO L461 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-10-29 03:40:11,518 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:11,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-10-29 03:40:11,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 03:40:11,519 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 61 states. [2020-10-29 03:40:11,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:11,960 INFO L93 Difference]: Finished difference Result 91 states and 93 transitions. [2020-10-29 03:40:11,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 61 states. [2020-10-29 03:40:11,961 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 72 [2020-10-29 03:40:11,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:11,962 INFO L225 Difference]: With dead ends: 91 [2020-10-29 03:40:11,962 INFO L226 Difference]: Without dead ends: 78 [2020-10-29 03:40:11,963 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1772, Invalid=1888, Unknown=0, NotChecked=0, Total=3660 [2020-10-29 03:40:11,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-29 03:40:11,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-29 03:40:11,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-29 03:40:11,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-10-29 03:40:11,967 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 72 [2020-10-29 03:40:11,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:11,968 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-10-29 03:40:11,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-10-29 03:40:11,968 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-10-29 03:40:11,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 03:40:11,969 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:11,969 INFO L422 BasicCegarLoop]: trace histogram [58, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:11,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-29 03:40:11,969 INFO L429 AbstractCegarLoop]: === Iteration 59 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:11,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:11,970 INFO L82 PathProgramCache]: Analyzing trace with hash 334270702, now seen corresponding path program 58 times [2020-10-29 03:40:11,970 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:11,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381924917] [2020-10-29 03:40:11,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:11,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:12,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:13,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 03:40:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1482 [2020-10-29 03:40:13,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:13,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 60 [2020-10-29 03:40:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:13,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:40:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:16,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:16,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:16,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:16,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:16,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:16,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:16,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:16,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:16,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:16,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:16,222 INFO L134 CoverageAnalysis]: Checked inductivity of 1711 backedges. 0 proven. 1711 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:40:16,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381924917] [2020-10-29 03:40:16,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:16,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62] total 62 [2020-10-29 03:40:16,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513156861] [2020-10-29 03:40:16,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 62 states [2020-10-29 03:40:16,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:16,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2020-10-29 03:40:16,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 03:40:16,224 INFO L87 Difference]: Start difference. First operand 78 states and 79 transitions. Second operand 62 states. [2020-10-29 03:40:16,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:16,697 INFO L93 Difference]: Finished difference Result 92 states and 94 transitions. [2020-10-29 03:40:16,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2020-10-29 03:40:16,698 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 73 [2020-10-29 03:40:16,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:16,699 INFO L225 Difference]: With dead ends: 92 [2020-10-29 03:40:16,699 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 03:40:16,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1832, Invalid=1950, Unknown=0, NotChecked=0, Total=3782 [2020-10-29 03:40:16,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 03:40:16,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-29 03:40:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-29 03:40:16,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 80 transitions. [2020-10-29 03:40:16,703 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 80 transitions. Word has length 73 [2020-10-29 03:40:16,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:16,704 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 80 transitions. [2020-10-29 03:40:16,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 62 states. [2020-10-29 03:40:16,704 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 80 transitions. [2020-10-29 03:40:16,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-29 03:40:16,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:16,705 INFO L422 BasicCegarLoop]: trace histogram [59, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:16,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-29 03:40:16,705 INFO L429 AbstractCegarLoop]: === Iteration 60 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:16,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:16,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1288171064, now seen corresponding path program 59 times [2020-10-29 03:40:16,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:16,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733150604] [2020-10-29 03:40:16,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:16,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:16,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:18,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:18,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 03:40:18,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:18,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1517 [2020-10-29 03:40:18,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:18,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 61 [2020-10-29 03:40:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:18,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 03:40:18,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:21,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:21,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:21,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:21,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:21,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:21,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:21,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:21,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:21,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:21,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:21,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 1770 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:40:21,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [733150604] [2020-10-29 03:40:21,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:21,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [63] total 63 [2020-10-29 03:40:21,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462479218] [2020-10-29 03:40:21,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 63 states [2020-10-29 03:40:21,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:21,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2020-10-29 03:40:21,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 03:40:21,117 INFO L87 Difference]: Start difference. First operand 79 states and 80 transitions. Second operand 63 states. [2020-10-29 03:40:21,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:21,606 INFO L93 Difference]: Finished difference Result 93 states and 95 transitions. [2020-10-29 03:40:21,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-29 03:40:21,606 INFO L78 Accepts]: Start accepts. Automaton has 63 states. Word has length 74 [2020-10-29 03:40:21,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:21,607 INFO L225 Difference]: With dead ends: 93 [2020-10-29 03:40:21,607 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:40:21,608 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1893, Invalid=2013, Unknown=0, NotChecked=0, Total=3906 [2020-10-29 03:40:21,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:40:21,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-29 03:40:21,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-29 03:40:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-10-29 03:40:21,612 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 74 [2020-10-29 03:40:21,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:21,612 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-10-29 03:40:21,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 63 states. [2020-10-29 03:40:21,612 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-10-29 03:40:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:40:21,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:21,613 INFO L422 BasicCegarLoop]: trace histogram [60, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:21,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-29 03:40:21,613 INFO L429 AbstractCegarLoop]: === Iteration 61 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:21,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:21,613 INFO L82 PathProgramCache]: Analyzing trace with hash 794311214, now seen corresponding path program 60 times [2020-10-29 03:40:21,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:21,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1621869878] [2020-10-29 03:40:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:23,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:23,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:40:23,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1584 [2020-10-29 03:40:23,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:23,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-29 03:40:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:23,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 03:40:23,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:26,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:26,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:26,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:26,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:26,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:26,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:26,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:26,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:26,185 INFO L134 CoverageAnalysis]: Checked inductivity of 1830 backedges. 0 proven. 1830 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:40:26,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1621869878] [2020-10-29 03:40:26,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:26,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [64] total 64 [2020-10-29 03:40:26,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891267379] [2020-10-29 03:40:26,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 64 states [2020-10-29 03:40:26,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:26,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2020-10-29 03:40:26,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 03:40:26,188 INFO L87 Difference]: Start difference. First operand 80 states and 81 transitions. Second operand 64 states. [2020-10-29 03:40:26,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:26,672 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2020-10-29 03:40:26,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2020-10-29 03:40:26,673 INFO L78 Accepts]: Start accepts. Automaton has 64 states. Word has length 75 [2020-10-29 03:40:26,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:26,674 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:40:26,674 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 03:40:26,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=1955, Invalid=2077, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 03:40:26,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 03:40:26,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-10-29 03:40:26,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-29 03:40:26,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-10-29 03:40:26,680 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 75 [2020-10-29 03:40:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:26,680 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-10-29 03:40:26,680 INFO L482 AbstractCegarLoop]: Interpolant automaton has 64 states. [2020-10-29 03:40:26,681 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-10-29 03:40:26,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:40:26,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:26,683 INFO L422 BasicCegarLoop]: trace histogram [61, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:26,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-29 03:40:26,684 INFO L429 AbstractCegarLoop]: === Iteration 62 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:26,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:26,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1630442248, now seen corresponding path program 61 times [2020-10-29 03:40:26,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:26,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780138771] [2020-10-29 03:40:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:26,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:28,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:28,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 03:40:28,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:28,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1664 [2020-10-29 03:40:28,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:28,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 63 [2020-10-29 03:40:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:28,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 03:40:28,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:31,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:31,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:31,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:31,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:31,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:31,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:31,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:31,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:31,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:31,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:31,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:31,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:31,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:31,437 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:40:31,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780138771] [2020-10-29 03:40:31,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:31,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2020-10-29 03:40:31,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322031366] [2020-10-29 03:40:31,437 INFO L461 AbstractCegarLoop]: Interpolant automaton has 65 states [2020-10-29 03:40:31,438 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:31,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2020-10-29 03:40:31,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 03:40:31,438 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 65 states. [2020-10-29 03:40:31,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:31,939 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2020-10-29 03:40:31,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-29 03:40:31,940 INFO L78 Accepts]: Start accepts. Automaton has 65 states. Word has length 76 [2020-10-29 03:40:31,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:31,941 INFO L225 Difference]: With dead ends: 95 [2020-10-29 03:40:31,941 INFO L226 Difference]: Without dead ends: 82 [2020-10-29 03:40:31,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=2018, Invalid=2142, Unknown=0, NotChecked=0, Total=4160 [2020-10-29 03:40:31,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-29 03:40:31,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-10-29 03:40:31,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-29 03:40:31,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 83 transitions. [2020-10-29 03:40:31,946 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 83 transitions. Word has length 76 [2020-10-29 03:40:31,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:31,947 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 83 transitions. [2020-10-29 03:40:31,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 65 states. [2020-10-29 03:40:31,947 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 83 transitions. [2020-10-29 03:40:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-29 03:40:31,947 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:31,947 INFO L422 BasicCegarLoop]: trace histogram [62, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:31,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-29 03:40:31,947 INFO L429 AbstractCegarLoop]: === Iteration 63 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:31,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:31,948 INFO L82 PathProgramCache]: Analyzing trace with hash 511611758, now seen corresponding path program 62 times [2020-10-29 03:40:31,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:31,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218245441] [2020-10-29 03:40:31,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:33,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:33,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 03:40:33,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1818 [2020-10-29 03:40:33,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:33,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 64 [2020-10-29 03:40:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:33,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 03:40:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:36,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:36,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:36,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:36,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:36,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:36,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:36,964 INFO L134 CoverageAnalysis]: Checked inductivity of 1953 backedges. 0 proven. 1953 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:40:36,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218245441] [2020-10-29 03:40:36,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:36,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [66] total 66 [2020-10-29 03:40:36,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031640255] [2020-10-29 03:40:36,964 INFO L461 AbstractCegarLoop]: Interpolant automaton has 66 states [2020-10-29 03:40:36,965 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:36,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2020-10-29 03:40:36,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-29 03:40:36,966 INFO L87 Difference]: Start difference. First operand 82 states and 83 transitions. Second operand 66 states. [2020-10-29 03:40:37,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:37,479 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2020-10-29 03:40:37,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2020-10-29 03:40:37,480 INFO L78 Accepts]: Start accepts. Automaton has 66 states. Word has length 77 [2020-10-29 03:40:37,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:37,482 INFO L225 Difference]: With dead ends: 96 [2020-10-29 03:40:37,482 INFO L226 Difference]: Without dead ends: 83 [2020-10-29 03:40:37,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=2082, Invalid=2208, Unknown=0, NotChecked=0, Total=4290 [2020-10-29 03:40:37,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-29 03:40:37,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-10-29 03:40:37,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-29 03:40:37,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 84 transitions. [2020-10-29 03:40:37,487 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 84 transitions. Word has length 77 [2020-10-29 03:40:37,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:37,487 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 84 transitions. [2020-10-29 03:40:37,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 66 states. [2020-10-29 03:40:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 84 transitions. [2020-10-29 03:40:37,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:40:37,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:37,488 INFO L422 BasicCegarLoop]: trace histogram [63, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:37,488 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-29 03:40:37,489 INFO L429 AbstractCegarLoop]: === Iteration 64 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:37,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:37,489 INFO L82 PathProgramCache]: Analyzing trace with hash -1804190792, now seen corresponding path program 63 times [2020-10-29 03:40:37,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:37,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1049980025] [2020-10-29 03:40:37,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:37,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:37,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:39,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:39,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 03:40:39,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:39,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1922 [2020-10-29 03:40:39,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:39,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 65 [2020-10-29 03:40:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 03:40:39,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:42,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:42,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:42,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:42,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:42,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:42,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:42,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:42,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:42,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:42,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:42,767 INFO L134 CoverageAnalysis]: Checked inductivity of 2016 backedges. 0 proven. 2016 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:40:42,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1049980025] [2020-10-29 03:40:42,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:42,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67] total 67 [2020-10-29 03:40:42,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13565900] [2020-10-29 03:40:42,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 67 states [2020-10-29 03:40:42,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:42,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2020-10-29 03:40:42,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 03:40:42,770 INFO L87 Difference]: Start difference. First operand 83 states and 84 transitions. Second operand 67 states. [2020-10-29 03:40:43,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:43,326 INFO L93 Difference]: Finished difference Result 97 states and 99 transitions. [2020-10-29 03:40:43,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2020-10-29 03:40:43,327 INFO L78 Accepts]: Start accepts. Automaton has 67 states. Word has length 78 [2020-10-29 03:40:43,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:43,328 INFO L225 Difference]: With dead ends: 97 [2020-10-29 03:40:43,329 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:40:43,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2147, Invalid=2275, Unknown=0, NotChecked=0, Total=4422 [2020-10-29 03:40:43,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:40:43,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-10-29 03:40:43,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:40:43,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-10-29 03:40:43,335 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 78 [2020-10-29 03:40:43,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:43,335 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-10-29 03:40:43,335 INFO L482 AbstractCegarLoop]: Interpolant automaton has 67 states. [2020-10-29 03:40:43,336 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-10-29 03:40:43,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 03:40:43,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:43,336 INFO L422 BasicCegarLoop]: trace histogram [64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:43,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-29 03:40:43,337 INFO L429 AbstractCegarLoop]: === Iteration 65 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:43,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:43,337 INFO L82 PathProgramCache]: Analyzing trace with hash -579625810, now seen corresponding path program 64 times [2020-10-29 03:40:43,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:43,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092735461] [2020-10-29 03:40:43,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:43,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:45,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:45,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-29 03:40:45,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:45,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2003 [2020-10-29 03:40:45,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:45,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 66 [2020-10-29 03:40:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:45,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:40:45,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:48,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:48,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:48,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:48,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:48,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:48,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:40:48,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:48,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:48,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:48,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:48,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 0 proven. 2080 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:40:48,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092735461] [2020-10-29 03:40:48,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:48,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [68] total 68 [2020-10-29 03:40:48,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874573001] [2020-10-29 03:40:48,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 68 states [2020-10-29 03:40:48,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:48,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2020-10-29 03:40:48,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2020-10-29 03:40:48,757 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 68 states. [2020-10-29 03:40:49,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:49,007 INFO L93 Difference]: Finished difference Result 98 states and 100 transitions. [2020-10-29 03:40:49,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-29 03:40:49,009 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 79 [2020-10-29 03:40:49,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:49,010 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:40:49,010 INFO L226 Difference]: Without dead ends: 85 [2020-10-29 03:40:49,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=2213, Invalid=2343, Unknown=0, NotChecked=0, Total=4556 [2020-10-29 03:40:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-10-29 03:40:49,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-10-29 03:40:49,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-29 03:40:49,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2020-10-29 03:40:49,015 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 79 [2020-10-29 03:40:49,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:49,016 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2020-10-29 03:40:49,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 68 states. [2020-10-29 03:40:49,016 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2020-10-29 03:40:49,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-29 03:40:49,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:49,017 INFO L422 BasicCegarLoop]: trace histogram [65, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:49,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-29 03:40:49,017 INFO L429 AbstractCegarLoop]: === Iteration 66 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:49,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:49,017 INFO L82 PathProgramCache]: Analyzing trace with hash -1272817032, now seen corresponding path program 65 times [2020-10-29 03:40:49,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:49,018 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957124888] [2020-10-29 03:40:49,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:49,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:51,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:51,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 03:40:51,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2159 [2020-10-29 03:40:51,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:51,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-29 03:40:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:51,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:40:51,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:54,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:40:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:54,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:54,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:54,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:40:54,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:54,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:40:54,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:54,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:54,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:40:54,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:40:54,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:40:54,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:40:54,668 INFO L134 CoverageAnalysis]: Checked inductivity of 2145 backedges. 0 proven. 2145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:40:54,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957124888] [2020-10-29 03:40:54,669 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:40:54,669 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [69] total 69 [2020-10-29 03:40:54,669 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751289998] [2020-10-29 03:40:54,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-10-29 03:40:54,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:40:54,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-10-29 03:40:54,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2020-10-29 03:40:54,670 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 69 states. [2020-10-29 03:40:55,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:40:55,083 INFO L93 Difference]: Finished difference Result 99 states and 101 transitions. [2020-10-29 03:40:55,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-29 03:40:55,084 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 80 [2020-10-29 03:40:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:40:55,085 INFO L225 Difference]: With dead ends: 99 [2020-10-29 03:40:55,085 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:40:55,085 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=2280, Invalid=2412, Unknown=0, NotChecked=0, Total=4692 [2020-10-29 03:40:55,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:40:55,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-29 03:40:55,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 03:40:55,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 87 transitions. [2020-10-29 03:40:55,090 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 87 transitions. Word has length 80 [2020-10-29 03:40:55,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:40:55,090 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 87 transitions. [2020-10-29 03:40:55,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-10-29 03:40:55,090 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 87 transitions. [2020-10-29 03:40:55,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 03:40:55,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:40:55,091 INFO L422 BasicCegarLoop]: trace histogram [66, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:40:55,091 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-29 03:40:55,091 INFO L429 AbstractCegarLoop]: === Iteration 67 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:40:55,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:40:55,091 INFO L82 PathProgramCache]: Analyzing trace with hash -1286908434, now seen corresponding path program 66 times [2020-10-29 03:40:55,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:40:55,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570755816] [2020-10-29 03:40:55,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:40:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:40:55,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:40:57,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:40:57,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 03:40:57,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:40:57,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2267 [2020-10-29 03:40:57,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:40:57,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:40:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 68 [2020-10-29 03:40:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:40:57,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 03:40:57,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:00,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:00,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:00,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:00,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:00,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:00,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:00,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:00,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:00,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:00,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:00,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:00,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:00,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2211 backedges. 0 proven. 2211 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:41:00,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570755816] [2020-10-29 03:41:00,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:00,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [70] total 70 [2020-10-29 03:41:00,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214861600] [2020-10-29 03:41:00,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 70 states [2020-10-29 03:41:00,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:00,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 70 interpolants. [2020-10-29 03:41:00,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2020-10-29 03:41:00,954 INFO L87 Difference]: Start difference. First operand 86 states and 87 transitions. Second operand 70 states. [2020-10-29 03:41:01,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:01,504 INFO L93 Difference]: Finished difference Result 100 states and 102 transitions. [2020-10-29 03:41:01,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2020-10-29 03:41:01,505 INFO L78 Accepts]: Start accepts. Automaton has 70 states. Word has length 81 [2020-10-29 03:41:01,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:01,506 INFO L225 Difference]: With dead ends: 100 [2020-10-29 03:41:01,506 INFO L226 Difference]: Without dead ends: 87 [2020-10-29 03:41:01,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2348, Invalid=2482, Unknown=0, NotChecked=0, Total=4830 [2020-10-29 03:41:01,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-29 03:41:01,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-29 03:41:01,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 03:41:01,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 88 transitions. [2020-10-29 03:41:01,512 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 88 transitions. Word has length 81 [2020-10-29 03:41:01,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:01,513 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 88 transitions. [2020-10-29 03:41:01,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 70 states. [2020-10-29 03:41:01,513 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 88 transitions. [2020-10-29 03:41:01,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 03:41:01,513 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:01,513 INFO L422 BasicCegarLoop]: trace histogram [67, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:01,513 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-29 03:41:01,513 INFO L429 AbstractCegarLoop]: === Iteration 68 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:01,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:01,514 INFO L82 PathProgramCache]: Analyzing trace with hash -1723741896, now seen corresponding path program 67 times [2020-10-29 03:41:01,514 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:01,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330550984] [2020-10-29 03:41:01,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:01,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:03,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:03,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:41:03,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:03,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2013 [2020-10-29 03:41:03,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:03,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 69 [2020-10-29 03:41:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-29 03:41:03,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:07,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:07,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:07,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:07,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:07,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:07,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:07,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:07,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:07,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:07,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:07,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2278 backedges. 0 proven. 2278 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:41:07,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [330550984] [2020-10-29 03:41:07,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:07,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [71] total 71 [2020-10-29 03:41:07,179 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553713928] [2020-10-29 03:41:07,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 71 states [2020-10-29 03:41:07,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:07,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2020-10-29 03:41:07,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2020-10-29 03:41:07,181 INFO L87 Difference]: Start difference. First operand 87 states and 88 transitions. Second operand 71 states. [2020-10-29 03:41:07,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:07,740 INFO L93 Difference]: Finished difference Result 101 states and 103 transitions. [2020-10-29 03:41:07,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2020-10-29 03:41:07,741 INFO L78 Accepts]: Start accepts. Automaton has 71 states. Word has length 82 [2020-10-29 03:41:07,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:07,742 INFO L225 Difference]: With dead ends: 101 [2020-10-29 03:41:07,742 INFO L226 Difference]: Without dead ends: 88 [2020-10-29 03:41:07,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2417, Invalid=2553, Unknown=0, NotChecked=0, Total=4970 [2020-10-29 03:41:07,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-29 03:41:07,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2020-10-29 03:41:07,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-29 03:41:07,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 89 transitions. [2020-10-29 03:41:07,747 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 89 transitions. Word has length 82 [2020-10-29 03:41:07,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:07,748 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 89 transitions. [2020-10-29 03:41:07,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 71 states. [2020-10-29 03:41:07,748 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 89 transitions. [2020-10-29 03:41:07,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 03:41:07,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:07,748 INFO L422 BasicCegarLoop]: trace histogram [68, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:07,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-29 03:41:07,749 INFO L429 AbstractCegarLoop]: === Iteration 69 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:07,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:07,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1914289966, now seen corresponding path program 68 times [2020-10-29 03:41:07,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:07,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817641087] [2020-10-29 03:41:07,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:07,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:09,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:09,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 03:41:09,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:09,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2216 [2020-10-29 03:41:09,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:09,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 70 [2020-10-29 03:41:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:09,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:41:09,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:13,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:13,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:13,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:13,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:13,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:13,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:13,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:13,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:13,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:13,754 INFO L134 CoverageAnalysis]: Checked inductivity of 2346 backedges. 0 proven. 2346 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:41:13,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817641087] [2020-10-29 03:41:13,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:13,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [72] total 72 [2020-10-29 03:41:13,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799707048] [2020-10-29 03:41:13,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 72 states [2020-10-29 03:41:13,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:13,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2020-10-29 03:41:13,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2020-10-29 03:41:13,756 INFO L87 Difference]: Start difference. First operand 88 states and 89 transitions. Second operand 72 states. [2020-10-29 03:41:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:14,053 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2020-10-29 03:41:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2020-10-29 03:41:14,054 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 83 [2020-10-29 03:41:14,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:14,055 INFO L225 Difference]: With dead ends: 102 [2020-10-29 03:41:14,055 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 03:41:14,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=2487, Invalid=2625, Unknown=0, NotChecked=0, Total=5112 [2020-10-29 03:41:14,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 03:41:14,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2020-10-29 03:41:14,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-29 03:41:14,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 90 transitions. [2020-10-29 03:41:14,059 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 90 transitions. Word has length 83 [2020-10-29 03:41:14,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:14,059 INFO L481 AbstractCegarLoop]: Abstraction has 89 states and 90 transitions. [2020-10-29 03:41:14,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 72 states. [2020-10-29 03:41:14,059 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 90 transitions. [2020-10-29 03:41:14,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:41:14,060 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:14,060 INFO L422 BasicCegarLoop]: trace histogram [69, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:14,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-29 03:41:14,060 INFO L429 AbstractCegarLoop]: === Iteration 70 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:14,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:14,060 INFO L82 PathProgramCache]: Analyzing trace with hash -1270839304, now seen corresponding path program 69 times [2020-10-29 03:41:14,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:14,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358315436] [2020-10-29 03:41:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:14,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:14,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:16,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:16,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:41:16,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:16,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2059 [2020-10-29 03:41:16,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:16,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 71 [2020-10-29 03:41:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 03:41:16,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:20,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:20,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:20,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:20,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:20,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:20,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:20,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:20,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:20,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:20,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:20,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 0 proven. 2415 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:41:20,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358315436] [2020-10-29 03:41:20,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:20,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [73] total 73 [2020-10-29 03:41:20,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563837407] [2020-10-29 03:41:20,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 73 states [2020-10-29 03:41:20,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:20,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2020-10-29 03:41:20,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2020-10-29 03:41:20,045 INFO L87 Difference]: Start difference. First operand 89 states and 90 transitions. Second operand 73 states. [2020-10-29 03:41:20,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:20,638 INFO L93 Difference]: Finished difference Result 103 states and 105 transitions. [2020-10-29 03:41:20,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2020-10-29 03:41:20,639 INFO L78 Accepts]: Start accepts. Automaton has 73 states. Word has length 84 [2020-10-29 03:41:20,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:20,640 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:41:20,640 INFO L226 Difference]: Without dead ends: 90 [2020-10-29 03:41:20,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=2558, Invalid=2698, Unknown=0, NotChecked=0, Total=5256 [2020-10-29 03:41:20,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-29 03:41:20,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2020-10-29 03:41:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-29 03:41:20,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 91 transitions. [2020-10-29 03:41:20,645 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 91 transitions. Word has length 84 [2020-10-29 03:41:20,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:20,645 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 91 transitions. [2020-10-29 03:41:20,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 73 states. [2020-10-29 03:41:20,645 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 91 transitions. [2020-10-29 03:41:20,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:41:20,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:20,646 INFO L422 BasicCegarLoop]: trace histogram [70, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:20,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-29 03:41:20,646 INFO L429 AbstractCegarLoop]: === Iteration 71 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:20,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:20,647 INFO L82 PathProgramCache]: Analyzing trace with hash -1225598866, now seen corresponding path program 70 times [2020-10-29 03:41:20,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:20,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683444568] [2020-10-29 03:41:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:20,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:22,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:22,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:41:22,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:22,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2134 [2020-10-29 03:41:22,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:22,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 72 [2020-10-29 03:41:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:22,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:41:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:26,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:26,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:26,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:26,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:26,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:26,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:26,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:26,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:26,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:26,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:26,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2485 backedges. 0 proven. 2485 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:41:26,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1683444568] [2020-10-29 03:41:26,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:26,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [74] total 74 [2020-10-29 03:41:26,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834704653] [2020-10-29 03:41:26,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 74 states [2020-10-29 03:41:26,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:26,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2020-10-29 03:41:26,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2020-10-29 03:41:26,840 INFO L87 Difference]: Start difference. First operand 90 states and 91 transitions. Second operand 74 states. [2020-10-29 03:41:27,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:27,418 INFO L93 Difference]: Finished difference Result 104 states and 106 transitions. [2020-10-29 03:41:27,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2020-10-29 03:41:27,419 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 85 [2020-10-29 03:41:27,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:27,420 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:41:27,420 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:41:27,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2630, Invalid=2772, Unknown=0, NotChecked=0, Total=5402 [2020-10-29 03:41:27,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:41:27,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-10-29 03:41:27,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-29 03:41:27,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 92 transitions. [2020-10-29 03:41:27,424 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 92 transitions. Word has length 85 [2020-10-29 03:41:27,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:27,425 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 92 transitions. [2020-10-29 03:41:27,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 74 states. [2020-10-29 03:41:27,425 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 92 transitions. [2020-10-29 03:41:27,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 03:41:27,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:27,426 INFO L422 BasicCegarLoop]: trace histogram [71, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:27,426 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2020-10-29 03:41:27,426 INFO L429 AbstractCegarLoop]: === Iteration 72 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:27,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:27,426 INFO L82 PathProgramCache]: Analyzing trace with hash 176854712, now seen corresponding path program 71 times [2020-10-29 03:41:27,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:27,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1232341172] [2020-10-29 03:41:27,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:27,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:27,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:29,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:29,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-29 03:41:29,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2236 [2020-10-29 03:41:29,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:29,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 73 [2020-10-29 03:41:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:29,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 03:41:29,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:33,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:33,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:33,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:33,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:33,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:33,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:33,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:33,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:33,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:33,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:33,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:33,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2556 backedges. 0 proven. 2556 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:41:33,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1232341172] [2020-10-29 03:41:33,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:33,821 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [75] total 75 [2020-10-29 03:41:33,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110341325] [2020-10-29 03:41:33,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 75 states [2020-10-29 03:41:33,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:33,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2020-10-29 03:41:33,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2020-10-29 03:41:33,823 INFO L87 Difference]: Start difference. First operand 91 states and 92 transitions. Second operand 75 states. [2020-10-29 03:41:34,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:34,297 INFO L93 Difference]: Finished difference Result 105 states and 107 transitions. [2020-10-29 03:41:34,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2020-10-29 03:41:34,297 INFO L78 Accepts]: Start accepts. Automaton has 75 states. Word has length 86 [2020-10-29 03:41:34,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:34,299 INFO L225 Difference]: With dead ends: 105 [2020-10-29 03:41:34,299 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:41:34,299 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2703, Invalid=2847, Unknown=0, NotChecked=0, Total=5550 [2020-10-29 03:41:34,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:41:34,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-29 03:41:34,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 03:41:34,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 93 transitions. [2020-10-29 03:41:34,304 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 93 transitions. Word has length 86 [2020-10-29 03:41:34,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:34,304 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 93 transitions. [2020-10-29 03:41:34,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 75 states. [2020-10-29 03:41:34,304 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 93 transitions. [2020-10-29 03:41:34,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 03:41:34,304 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:34,305 INFO L422 BasicCegarLoop]: trace histogram [72, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:34,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2020-10-29 03:41:34,305 INFO L429 AbstractCegarLoop]: === Iteration 73 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:34,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:34,305 INFO L82 PathProgramCache]: Analyzing trace with hash 703242670, now seen corresponding path program 72 times [2020-10-29 03:41:34,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:34,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587455563] [2020-10-29 03:41:34,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:34,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:36,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:36,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 03:41:36,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:36,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2317 [2020-10-29 03:41:36,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:36,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:36,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 74 [2020-10-29 03:41:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:36,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 03:41:36,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:40,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:40,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:40,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:40,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:40,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:40,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:40,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:40,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:40,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:40,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:40,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2628 backedges. 0 proven. 2628 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:41:40,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587455563] [2020-10-29 03:41:40,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:40,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [76] total 76 [2020-10-29 03:41:40,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654604299] [2020-10-29 03:41:40,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-10-29 03:41:40,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:40,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-10-29 03:41:40,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2020-10-29 03:41:40,936 INFO L87 Difference]: Start difference. First operand 92 states and 93 transitions. Second operand 76 states. [2020-10-29 03:41:41,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:41,550 INFO L93 Difference]: Finished difference Result 106 states and 108 transitions. [2020-10-29 03:41:41,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-29 03:41:41,551 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 87 [2020-10-29 03:41:41,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:41,552 INFO L225 Difference]: With dead ends: 106 [2020-10-29 03:41:41,552 INFO L226 Difference]: Without dead ends: 93 [2020-10-29 03:41:41,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=2777, Invalid=2923, Unknown=0, NotChecked=0, Total=5700 [2020-10-29 03:41:41,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-29 03:41:41,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2020-10-29 03:41:41,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-29 03:41:41,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 94 transitions. [2020-10-29 03:41:41,557 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 94 transitions. Word has length 87 [2020-10-29 03:41:41,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:41,558 INFO L481 AbstractCegarLoop]: Abstraction has 93 states and 94 transitions. [2020-10-29 03:41:41,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-10-29 03:41:41,558 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 94 transitions. [2020-10-29 03:41:41,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-29 03:41:41,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:41,559 INFO L422 BasicCegarLoop]: trace histogram [73, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:41,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2020-10-29 03:41:41,559 INFO L429 AbstractCegarLoop]: === Iteration 74 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:41,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:41,559 INFO L82 PathProgramCache]: Analyzing trace with hash -158599816, now seen corresponding path program 73 times [2020-10-29 03:41:41,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:41,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819415017] [2020-10-29 03:41:41,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:41,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:41,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:43,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:43,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:41:43,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:43,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2316 [2020-10-29 03:41:43,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:43,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:43,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 75 [2020-10-29 03:41:43,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:43,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 03:41:43,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:48,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:48,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:48,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:48,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:48,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:48,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:48,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:41:48,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:48,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:48,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:48,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:48,313 INFO L134 CoverageAnalysis]: Checked inductivity of 2701 backedges. 0 proven. 2701 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:41:48,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819415017] [2020-10-29 03:41:48,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:48,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [77] total 77 [2020-10-29 03:41:48,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220569929] [2020-10-29 03:41:48,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 77 states [2020-10-29 03:41:48,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:48,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 77 interpolants. [2020-10-29 03:41:48,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2020-10-29 03:41:48,315 INFO L87 Difference]: Start difference. First operand 93 states and 94 transitions. Second operand 77 states. [2020-10-29 03:41:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:48,793 INFO L93 Difference]: Finished difference Result 107 states and 109 transitions. [2020-10-29 03:41:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2020-10-29 03:41:48,794 INFO L78 Accepts]: Start accepts. Automaton has 77 states. Word has length 88 [2020-10-29 03:41:48,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:48,795 INFO L225 Difference]: With dead ends: 107 [2020-10-29 03:41:48,795 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 03:41:48,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2852, Invalid=3000, Unknown=0, NotChecked=0, Total=5852 [2020-10-29 03:41:48,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 03:41:48,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2020-10-29 03:41:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-29 03:41:48,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2020-10-29 03:41:48,799 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 88 [2020-10-29 03:41:48,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:48,799 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2020-10-29 03:41:48,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 77 states. [2020-10-29 03:41:48,800 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2020-10-29 03:41:48,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 03:41:48,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:48,800 INFO L422 BasicCegarLoop]: trace histogram [74, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:48,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2020-10-29 03:41:48,800 INFO L429 AbstractCegarLoop]: === Iteration 75 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:48,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:48,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1105913106, now seen corresponding path program 74 times [2020-10-29 03:41:48,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:48,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041146489] [2020-10-29 03:41:48,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:48,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:51,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:51,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-29 03:41:51,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:51,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2495 [2020-10-29 03:41:51,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:51,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:51,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 76 [2020-10-29 03:41:51,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:51,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 03:41:51,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:55,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:41:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:55,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:55,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:41:55,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:55,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:41:55,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:55,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:55,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:41:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:41:55,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:41:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:41:55,878 INFO L134 CoverageAnalysis]: Checked inductivity of 2775 backedges. 0 proven. 2775 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:41:55,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041146489] [2020-10-29 03:41:55,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:41:55,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [78] total 78 [2020-10-29 03:41:55,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784245654] [2020-10-29 03:41:55,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 78 states [2020-10-29 03:41:55,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:41:55,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2020-10-29 03:41:55,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2020-10-29 03:41:55,881 INFO L87 Difference]: Start difference. First operand 94 states and 95 transitions. Second operand 78 states. [2020-10-29 03:41:56,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:41:56,526 INFO L93 Difference]: Finished difference Result 108 states and 110 transitions. [2020-10-29 03:41:56,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2020-10-29 03:41:56,527 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 89 [2020-10-29 03:41:56,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:41:56,528 INFO L225 Difference]: With dead ends: 108 [2020-10-29 03:41:56,528 INFO L226 Difference]: Without dead ends: 95 [2020-10-29 03:41:56,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=2928, Invalid=3078, Unknown=0, NotChecked=0, Total=6006 [2020-10-29 03:41:56,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-29 03:41:56,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-29 03:41:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-29 03:41:56,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 96 transitions. [2020-10-29 03:41:56,533 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 96 transitions. Word has length 89 [2020-10-29 03:41:56,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:41:56,534 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 96 transitions. [2020-10-29 03:41:56,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 78 states. [2020-10-29 03:41:56,534 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 96 transitions. [2020-10-29 03:41:56,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-29 03:41:56,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:41:56,534 INFO L422 BasicCegarLoop]: trace histogram [75, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:41:56,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2020-10-29 03:41:56,535 INFO L429 AbstractCegarLoop]: === Iteration 76 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:41:56,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:41:56,535 INFO L82 PathProgramCache]: Analyzing trace with hash -407854024, now seen corresponding path program 75 times [2020-10-29 03:41:56,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:41:56,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [191945045] [2020-10-29 03:41:56,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:41:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:41:56,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:41:59,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:41:59,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-29 03:41:59,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:41:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2456 [2020-10-29 03:41:59,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:41:59,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:41:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 77 [2020-10-29 03:41:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:41:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 03:41:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:03,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:03,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:03,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:03,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:03,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:03,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:03,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:42:03,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:03,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:03,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:03,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:03,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2850 backedges. 0 proven. 2850 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:42:03,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [191945045] [2020-10-29 03:42:03,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:03,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [79] total 79 [2020-10-29 03:42:03,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624875837] [2020-10-29 03:42:03,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 79 states [2020-10-29 03:42:03,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:03,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2020-10-29 03:42:03,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2020-10-29 03:42:03,863 INFO L87 Difference]: Start difference. First operand 95 states and 96 transitions. Second operand 79 states. [2020-10-29 03:42:04,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:04,513 INFO L93 Difference]: Finished difference Result 109 states and 111 transitions. [2020-10-29 03:42:04,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2020-10-29 03:42:04,514 INFO L78 Accepts]: Start accepts. Automaton has 79 states. Word has length 90 [2020-10-29 03:42:04,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:04,515 INFO L225 Difference]: With dead ends: 109 [2020-10-29 03:42:04,515 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 03:42:04,516 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=3005, Invalid=3157, Unknown=0, NotChecked=0, Total=6162 [2020-10-29 03:42:04,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 03:42:04,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-10-29 03:42:04,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 03:42:04,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2020-10-29 03:42:04,520 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 90 [2020-10-29 03:42:04,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:04,520 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2020-10-29 03:42:04,520 INFO L482 AbstractCegarLoop]: Interpolant automaton has 79 states. [2020-10-29 03:42:04,521 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2020-10-29 03:42:04,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 03:42:04,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:04,521 INFO L422 BasicCegarLoop]: trace histogram [76, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:04,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2020-10-29 03:42:04,522 INFO L429 AbstractCegarLoop]: === Iteration 77 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:04,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:04,522 INFO L82 PathProgramCache]: Analyzing trace with hash -242858962, now seen corresponding path program 76 times [2020-10-29 03:42:04,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:04,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965311348] [2020-10-29 03:42:04,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:04,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:04,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking...