/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:02:07,922 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:02:07,925 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:02:07,978 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:02:07,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:02:07,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:02:07,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:02:07,995 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:02:07,999 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:02:08,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:02:08,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:02:08,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:02:08,008 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:02:08,011 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:02:08,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:02:08,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:02:08,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:02:08,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:02:08,029 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:02:08,037 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:02:08,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:02:08,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:02:08,043 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:02:08,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:02:08,054 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:02:08,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:02:08,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:02:08,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:02:08,058 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:02:08,059 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:02:08,060 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:02:08,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:02:08,063 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:02:08,064 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:02:08,065 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:02:08,065 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:02:08,066 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:02:08,066 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:02:08,066 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:02:08,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:02:08,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:02:08,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:02:08,156 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:02:08,156 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:02:08,158 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:02:08,158 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:02:08,159 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:02:08,159 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:02:08,159 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:02:08,159 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:02:08,159 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:02:08,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:02:08,160 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:02:08,160 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:02:08,160 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:02:08,160 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:02:08,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:02:08,161 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:02:08,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:02:08,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:02:08,161 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:02:08,162 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:02:08,162 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:02:08,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:02:08,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:02:08,163 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:02:08,163 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:02:08,163 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:02:08,163 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:02:08,163 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:02:08,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:02:08,164 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:02:08,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:02:08,627 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:02:08,630 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:02:08,631 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:02:08,632 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:02:08,633 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label02.c [2020-10-28 12:02:08,718 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46112b710/4f08a0e44dda47f79a1ce5f0f14cf69e/FLAG83002762b [2020-10-28 12:02:09,492 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:02:09,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label02.c [2020-10-28 12:02:09,515 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46112b710/4f08a0e44dda47f79a1ce5f0f14cf69e/FLAG83002762b [2020-10-28 12:02:09,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/46112b710/4f08a0e44dda47f79a1ce5f0f14cf69e [2020-10-28 12:02:09,705 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:02:09,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:02:09,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:02:09,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:02:09,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:02:09,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:02:09" (1/1) ... [2020-10-28 12:02:09,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a08ed49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:09, skipping insertion in model container [2020-10-28 12:02:09,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:02:09" (1/1) ... [2020-10-28 12:02:09,748 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:02:09,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:02:10,567 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:02:10,585 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:02:10,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:02:10,816 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:02:10,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:10 WrapperNode [2020-10-28 12:02:10,818 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:02:10,819 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:02:10,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:02:10,820 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:02:10,834 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:10" (1/1) ... [2020-10-28 12:02:10,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:10" (1/1) ... [2020-10-28 12:02:10,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:10" (1/1) ... [2020-10-28 12:02:10,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:10" (1/1) ... [2020-10-28 12:02:10,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:10" (1/1) ... [2020-10-28 12:02:10,994 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:10" (1/1) ... [2020-10-28 12:02:11,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:10" (1/1) ... [2020-10-28 12:02:11,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:02:11,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:02:11,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:02:11,041 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:02:11,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:02:11,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:02:11,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:02:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:02:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:02:11,139 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:02:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:02:11,140 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:02:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:02:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:02:11,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:02:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:02:11,142 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:02:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:02:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:02:11,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:02:11,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:02:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:02:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:02:11,145 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:02:13,176 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:02:13,177 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:02:13,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:02:13 BoogieIcfgContainer [2020-10-28 12:02:13,180 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:02:13,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:02:13,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:02:13,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:02:13,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:02:09" (1/3) ... [2020-10-28 12:02:13,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f6dc00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:02:13, skipping insertion in model container [2020-10-28 12:02:13,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:02:10" (2/3) ... [2020-10-28 12:02:13,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14f6dc00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:02:13, skipping insertion in model container [2020-10-28 12:02:13,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:02:13" (3/3) ... [2020-10-28 12:02:13,189 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label02.c [2020-10-28 12:02:13,202 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:02:13,208 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:02:13,222 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:02:13,254 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:02:13,254 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:02:13,254 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:02:13,254 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:02:13,255 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:02:13,255 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:02:13,255 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:02:13,255 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:02:13,281 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:02:13,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-28 12:02:13,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:13,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:02:13,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:13,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:13,300 INFO L82 PathProgramCache]: Analyzing trace with hash 402674166, now seen corresponding path program 1 times [2020-10-28 12:02:13,309 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:13,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2010465667] [2020-10-28 12:02:13,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:13,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:14,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:14,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 12:02:14,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:14,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 675 [2020-10-28 12:02:14,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:14,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:02:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:02:14,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-28 12:02:14,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:02:14,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:14,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:14,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:14,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:14,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:14,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:02:14,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:14,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:14,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:14,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:02:14,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:14,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:02:14,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2010465667] [2020-10-28 12:02:14,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:02:14,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:02:14,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979536210] [2020-10-28 12:02:14,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:02:14,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:14,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:02:14,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:02:14,556 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-28 12:02:17,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:17,881 INFO L93 Difference]: Finished difference Result 796 states and 1392 transitions. [2020-10-28 12:02:17,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:02:17,883 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-28 12:02:17,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:17,902 INFO L225 Difference]: With dead ends: 796 [2020-10-28 12:02:17,903 INFO L226 Difference]: Without dead ends: 435 [2020-10-28 12:02:17,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:02:17,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2020-10-28 12:02:17,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 431. [2020-10-28 12:02:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-28 12:02:18,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 619 transitions. [2020-10-28 12:02:18,003 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 619 transitions. Word has length 61 [2020-10-28 12:02:18,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:18,004 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 619 transitions. [2020-10-28 12:02:18,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:02:18,004 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 619 transitions. [2020-10-28 12:02:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 12:02:18,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:18,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:02:18,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:02:18,012 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:18,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:18,013 INFO L82 PathProgramCache]: Analyzing trace with hash 1281441403, now seen corresponding path program 1 times [2020-10-28 12:02:18,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:18,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410108346] [2020-10-28 12:02:18,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:18,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:18,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:19,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:20,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:20,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 12:02:20,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:02:20,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2536 [2020-10-28 12:02:20,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:20,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:02:20,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:02:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:02:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:20,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:20,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:20,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:20,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:20,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:20,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 12:02:20,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:20,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:20,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:20,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:02:20,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:02:20,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:02:20,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:21,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:21,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:02:21,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:21,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 12:02:21,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:21,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:02:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:02:21,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:21,154 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:02:21,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1410108346] [2020-10-28 12:02:21,155 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:02:21,155 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:02:21,155 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298624999] [2020-10-28 12:02:21,157 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:02:21,157 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:21,161 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:02:21,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:02:21,163 INFO L87 Difference]: Start difference. First operand 431 states and 619 transitions. Second operand 7 states. [2020-10-28 12:02:27,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:27,668 INFO L93 Difference]: Finished difference Result 1322 states and 2023 transitions. [2020-10-28 12:02:27,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:02:27,670 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-28 12:02:27,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:27,694 INFO L225 Difference]: With dead ends: 1322 [2020-10-28 12:02:27,694 INFO L226 Difference]: Without dead ends: 897 [2020-10-28 12:02:27,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:02:27,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-10-28 12:02:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 826. [2020-10-28 12:02:27,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 826 states. [2020-10-28 12:02:27,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 1110 transitions. [2020-10-28 12:02:27,822 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 1110 transitions. Word has length 133 [2020-10-28 12:02:27,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:27,825 INFO L481 AbstractCegarLoop]: Abstraction has 826 states and 1110 transitions. [2020-10-28 12:02:27,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:02:27,825 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 1110 transitions. [2020-10-28 12:02:27,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-28 12:02:27,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:27,836 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:02:27,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:02:27,836 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:27,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:27,837 INFO L82 PathProgramCache]: Analyzing trace with hash -364615285, now seen corresponding path program 1 times [2020-10-28 12:02:27,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:27,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935404636] [2020-10-28 12:02:27,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:27,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:28,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:28,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:29,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:29,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-28 12:02:29,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:02:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1626 [2020-10-28 12:02:29,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:29,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:02:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:02:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:02:29,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:29,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:29,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:29,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:29,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:29,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:29,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:29,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 12:02:29,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:29,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:29,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:02:29,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:29,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:02:29,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:29,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:29,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:29,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:02:29,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 12:02:29,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:29,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:29,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:29,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:02:29,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:02:29,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:29,978 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:02:29,979 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1935404636] [2020-10-28 12:02:29,979 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:02:29,979 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:02:29,979 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083584201] [2020-10-28 12:02:29,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:02:29,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:29,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:02:29,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:02:29,983 INFO L87 Difference]: Start difference. First operand 826 states and 1110 transitions. Second operand 7 states. [2020-10-28 12:02:33,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:33,231 INFO L93 Difference]: Finished difference Result 2071 states and 2752 transitions. [2020-10-28 12:02:33,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:02:33,232 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-28 12:02:33,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:33,240 INFO L225 Difference]: With dead ends: 2071 [2020-10-28 12:02:33,240 INFO L226 Difference]: Without dead ends: 1251 [2020-10-28 12:02:33,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:02:33,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1251 states. [2020-10-28 12:02:33,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1251 to 1221. [2020-10-28 12:02:33,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1221 states. [2020-10-28 12:02:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1549 transitions. [2020-10-28 12:02:33,289 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1549 transitions. Word has length 141 [2020-10-28 12:02:33,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:33,289 INFO L481 AbstractCegarLoop]: Abstraction has 1221 states and 1549 transitions. [2020-10-28 12:02:33,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:02:33,290 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1549 transitions. [2020-10-28 12:02:33,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-28 12:02:33,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:33,293 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:02:33,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:02:33,293 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:33,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:33,294 INFO L82 PathProgramCache]: Analyzing trace with hash 117805058, now seen corresponding path program 1 times [2020-10-28 12:02:33,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:33,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645699049] [2020-10-28 12:02:33,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:33,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:33,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:33,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-28 12:02:33,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:33,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-28 12:02:33,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:33,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:33,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:02:33,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 12:02:33,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:33,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:33,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:33,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:33,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:33,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:33,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:33,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:02:33,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:33,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:33,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:02:33,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:33,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:02:33,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:33,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:02:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:33,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:34,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:34,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:02:34,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:34,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 12:02:34,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:34,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:34,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:02:34,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:34,203 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:02:34,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645699049] [2020-10-28 12:02:34,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:02:34,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:02:34,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306426306] [2020-10-28 12:02:34,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:02:34,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:34,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:02:34,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:02:34,210 INFO L87 Difference]: Start difference. First operand 1221 states and 1549 transitions. Second operand 5 states. [2020-10-28 12:02:37,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:37,740 INFO L93 Difference]: Finished difference Result 2868 states and 3836 transitions. [2020-10-28 12:02:37,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:02:37,747 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2020-10-28 12:02:37,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:37,759 INFO L225 Difference]: With dead ends: 2868 [2020-10-28 12:02:37,760 INFO L226 Difference]: Without dead ends: 2031 [2020-10-28 12:02:37,763 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:02:37,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2031 states. [2020-10-28 12:02:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2031 to 2023. [2020-10-28 12:02:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2023 states. [2020-10-28 12:02:37,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2023 states to 2023 states and 2597 transitions. [2020-10-28 12:02:37,829 INFO L78 Accepts]: Start accepts. Automaton has 2023 states and 2597 transitions. Word has length 192 [2020-10-28 12:02:37,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:37,831 INFO L481 AbstractCegarLoop]: Abstraction has 2023 states and 2597 transitions. [2020-10-28 12:02:37,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:02:37,831 INFO L276 IsEmpty]: Start isEmpty. Operand 2023 states and 2597 transitions. [2020-10-28 12:02:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-28 12:02:37,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:37,837 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:02:37,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:02:37,837 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:37,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:37,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1239464082, now seen corresponding path program 1 times [2020-10-28 12:02:37,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:37,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011656553] [2020-10-28 12:02:37,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:37,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:37,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:38,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:41,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:41,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-28 12:02:41,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:02:41,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3355 [2020-10-28 12:02:41,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:41,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:41,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:02:41,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:02:41,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:41,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:41,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:41,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:41,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:41,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:41,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:41,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:02:41,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:41,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:02:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:02:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:41,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:02:41,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:41,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:41,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:41,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:02:41,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:41,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-28 12:02:41,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:41,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:41,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:02:41,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:41,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:02:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:41,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:41,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:41,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:02:41,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:02:41,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:41,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:02:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:02:41,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:42,226 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:02:42,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011656553] [2020-10-28 12:02:42,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:02:42,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:02:42,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959998536] [2020-10-28 12:02:42,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:02:42,228 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:42,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:02:42,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:02:42,229 INFO L87 Difference]: Start difference. First operand 2023 states and 2597 transitions. Second operand 7 states. [2020-10-28 12:02:46,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:46,264 INFO L93 Difference]: Finished difference Result 4486 states and 5974 transitions. [2020-10-28 12:02:46,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:02:46,265 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 250 [2020-10-28 12:02:46,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:46,285 INFO L225 Difference]: With dead ends: 4486 [2020-10-28 12:02:46,285 INFO L226 Difference]: Without dead ends: 2847 [2020-10-28 12:02:46,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:02:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2847 states. [2020-10-28 12:02:46,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2847 to 2827. [2020-10-28 12:02:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2827 states. [2020-10-28 12:02:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2827 states to 2827 states and 3529 transitions. [2020-10-28 12:02:46,418 INFO L78 Accepts]: Start accepts. Automaton has 2827 states and 3529 transitions. Word has length 250 [2020-10-28 12:02:46,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:46,418 INFO L481 AbstractCegarLoop]: Abstraction has 2827 states and 3529 transitions. [2020-10-28 12:02:46,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:02:46,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2827 states and 3529 transitions. [2020-10-28 12:02:46,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-28 12:02:46,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:46,425 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:02:46,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:02:46,425 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:46,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:46,425 INFO L82 PathProgramCache]: Analyzing trace with hash 981006902, now seen corresponding path program 1 times [2020-10-28 12:02:46,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:46,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900752308] [2020-10-28 12:02:46,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:46,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:46,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:47,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:47,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:49,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:49,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-28 12:02:49,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:02:49,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3018 [2020-10-28 12:02:49,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:49,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:49,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:02:49,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:02:49,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-28 12:02:49,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:49,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:49,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:49,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:49,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:49,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:49,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:49,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:02:49,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:49,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:49,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:02:49,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:49,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:02:49,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:49,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:02:49,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:49,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:49,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:49,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:02:49,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:49,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 12:02:49,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:49,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:49,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:02:49,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:49,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:02:49,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:49,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:50,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:50,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:02:50,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 12:02:50,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:50,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:02:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:02:50,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:50,251 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 128 proven. 53 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:02:50,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900752308] [2020-10-28 12:02:50,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:02:50,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:02:50,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859218605] [2020-10-28 12:02:50,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:02:50,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:50,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:02:50,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:02:50,254 INFO L87 Difference]: Start difference. First operand 2827 states and 3529 transitions. Second operand 6 states. [2020-10-28 12:02:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:02:53,770 INFO L93 Difference]: Finished difference Result 6885 states and 8762 transitions. [2020-10-28 12:02:53,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:02:53,771 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 257 [2020-10-28 12:02:53,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:02:53,794 INFO L225 Difference]: With dead ends: 6885 [2020-10-28 12:02:53,794 INFO L226 Difference]: Without dead ends: 4442 [2020-10-28 12:02:53,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:02:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2020-10-28 12:02:53,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4409. [2020-10-28 12:02:53,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4409 states. [2020-10-28 12:02:53,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5452 transitions. [2020-10-28 12:02:53,929 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5452 transitions. Word has length 257 [2020-10-28 12:02:53,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:02:53,930 INFO L481 AbstractCegarLoop]: Abstraction has 4409 states and 5452 transitions. [2020-10-28 12:02:53,930 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:02:53,930 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5452 transitions. [2020-10-28 12:02:53,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-28 12:02:53,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:02:53,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:02:53,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:02:53,937 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:02:53,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:02:53,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1725085741, now seen corresponding path program 1 times [2020-10-28 12:02:53,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:02:53,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2071729520] [2020-10-28 12:02:53,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:02:53,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:54,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:54,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:54,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:55,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:57,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:57,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-28 12:02:57,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:02:57,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3999 [2020-10-28 12:02:57,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:57,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:02:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:02:57,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:02:57,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:58,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:02:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:58,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:58,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:58,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:02:58,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:58,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:02:58,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:58,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:02:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:02:58,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:02:58,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:02:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:58,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:58,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:58,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:02:58,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:58,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 12:02:58,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:58,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:02:58,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:02:58,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:02:58,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:58,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:02:58,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:02:58,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:02:58,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:02:58,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 12:02:58,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:02:58,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:02:58,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:02:58,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:02:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:02:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:02:58,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:02:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:02:58,705 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 126 proven. 53 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:02:58,706 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2071729520] [2020-10-28 12:02:58,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:02:58,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:02:58,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961927084] [2020-10-28 12:02:58,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:02:58,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:02:58,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:02:58,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:02:58,709 INFO L87 Difference]: Start difference. First operand 4409 states and 5452 transitions. Second operand 6 states. [2020-10-28 12:03:02,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:02,073 INFO L93 Difference]: Finished difference Result 9182 states and 12072 transitions. [2020-10-28 12:03:02,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:03:02,075 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 270 [2020-10-28 12:03:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:02,108 INFO L225 Difference]: With dead ends: 9182 [2020-10-28 12:03:02,109 INFO L226 Difference]: Without dead ends: 5157 [2020-10-28 12:03:02,122 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:03:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5157 states. [2020-10-28 12:03:02,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5157 to 5037. [2020-10-28 12:03:02,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5037 states. [2020-10-28 12:03:02,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5037 states to 5037 states and 6348 transitions. [2020-10-28 12:03:02,292 INFO L78 Accepts]: Start accepts. Automaton has 5037 states and 6348 transitions. Word has length 270 [2020-10-28 12:03:02,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:02,293 INFO L481 AbstractCegarLoop]: Abstraction has 5037 states and 6348 transitions. [2020-10-28 12:03:02,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:03:02,293 INFO L276 IsEmpty]: Start isEmpty. Operand 5037 states and 6348 transitions. [2020-10-28 12:03:02,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2020-10-28 12:03:02,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:02,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:02,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:03:02,300 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:02,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:02,301 INFO L82 PathProgramCache]: Analyzing trace with hash -2008606123, now seen corresponding path program 1 times [2020-10-28 12:03:02,301 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:02,301 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109086516] [2020-10-28 12:03:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:02,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:02,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:02,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:02,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:07,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:07,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 286 [2020-10-28 12:03:07,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:03:07,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5104 [2020-10-28 12:03:07,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:07,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:07,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:07,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:03:07,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:03:07,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:07,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:07,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:07,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:07,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:07,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:03:07,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:07,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:07,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:07,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:07,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:07,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:07,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:07,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:07,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:07,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:07,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 12:03:07,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:07,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:03:07,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:03:07,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:07,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:07,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:07,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:03:07,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:07,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 12:03:07,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:07,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:07,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:03:07,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:07,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:03:07,991 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-28 12:03:07,991 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109086516] [2020-10-28 12:03:07,991 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:07,991 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:03:07,992 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914208959] [2020-10-28 12:03:07,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:03:07,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:07,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:03:07,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:03:07,993 INFO L87 Difference]: Start difference. First operand 5037 states and 6348 transitions. Second operand 5 states. [2020-10-28 12:03:10,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:10,913 INFO L93 Difference]: Finished difference Result 9278 states and 11814 transitions. [2020-10-28 12:03:10,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:03:10,914 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 272 [2020-10-28 12:03:10,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:10,941 INFO L225 Difference]: With dead ends: 9278 [2020-10-28 12:03:10,942 INFO L226 Difference]: Without dead ends: 4625 [2020-10-28 12:03:10,955 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:03:10,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4625 states. [2020-10-28 12:03:11,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4625 to 4598. [2020-10-28 12:03:11,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4598 states. [2020-10-28 12:03:11,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4598 states to 4598 states and 5487 transitions. [2020-10-28 12:03:11,146 INFO L78 Accepts]: Start accepts. Automaton has 4598 states and 5487 transitions. Word has length 272 [2020-10-28 12:03:11,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:11,147 INFO L481 AbstractCegarLoop]: Abstraction has 4598 states and 5487 transitions. [2020-10-28 12:03:11,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:03:11,147 INFO L276 IsEmpty]: Start isEmpty. Operand 4598 states and 5487 transitions. [2020-10-28 12:03:11,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-28 12:03:11,156 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:11,156 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:11,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:03:11,157 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:11,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:11,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1324641719, now seen corresponding path program 1 times [2020-10-28 12:03:11,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:11,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [551235480] [2020-10-28 12:03:11,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:11,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:11,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:12,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:12,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-28 12:03:12,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:03:12,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1618 [2020-10-28 12:03:12,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:12,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:12,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 12:03:12,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:12,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:12,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:12,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:12,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:12,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:12,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:12,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:03:12,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:12,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:12,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:12,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:13,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:13,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:13,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:13,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:13,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:13,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 12:03:13,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:13,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:13,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:13,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:13,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:03:13,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:13,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:13,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:13,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:13,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 12:03:13,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:13,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 12:03:13,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:13,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:13,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 12:03:13,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:13,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [551235480] [2020-10-28 12:03:13,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:13,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:03:13,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121085330] [2020-10-28 12:03:13,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:03:13,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:13,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:03:13,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:03:13,489 INFO L87 Difference]: Start difference. First operand 4598 states and 5487 transitions. Second operand 8 states. [2020-10-28 12:03:19,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:19,130 INFO L93 Difference]: Finished difference Result 11556 states and 14511 transitions. [2020-10-28 12:03:19,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:03:19,131 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-10-28 12:03:19,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:19,170 INFO L225 Difference]: With dead ends: 11556 [2020-10-28 12:03:19,171 INFO L226 Difference]: Without dead ends: 7342 [2020-10-28 12:03:19,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:03:19,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7342 states. [2020-10-28 12:03:19,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7342 to 6368. [2020-10-28 12:03:19,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6368 states. [2020-10-28 12:03:19,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6368 states to 6368 states and 7928 transitions. [2020-10-28 12:03:19,409 INFO L78 Accepts]: Start accepts. Automaton has 6368 states and 7928 transitions. Word has length 288 [2020-10-28 12:03:19,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:19,409 INFO L481 AbstractCegarLoop]: Abstraction has 6368 states and 7928 transitions. [2020-10-28 12:03:19,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:03:19,410 INFO L276 IsEmpty]: Start isEmpty. Operand 6368 states and 7928 transitions. [2020-10-28 12:03:19,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-28 12:03:19,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:19,419 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:19,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:03:19,420 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:19,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:19,420 INFO L82 PathProgramCache]: Analyzing trace with hash 2081078877, now seen corresponding path program 1 times [2020-10-28 12:03:19,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:19,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70525924] [2020-10-28 12:03:19,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:19,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:19,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:20,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:21,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:21,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 303 [2020-10-28 12:03:21,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:03:21,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2173 [2020-10-28 12:03:21,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:21,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:21,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:21,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:21,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 12:03:21,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:21,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:21,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:21,815 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:21,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:21,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:21,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:03:21,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:21,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:21,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:21,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:21,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:21,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:22,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:22,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:22,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:22,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 12:03:22,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:22,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:22,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:22,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:22,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:03:22,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:22,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:22,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:22,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:22,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:22,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 12:03:22,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:22,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-28 12:03:22,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:22,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:22,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:22,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:03:22,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:22,415 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:22,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70525924] [2020-10-28 12:03:22,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:22,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:22,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124835503] [2020-10-28 12:03:22,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:22,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:22,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:22,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:22,418 INFO L87 Difference]: Start difference. First operand 6368 states and 7928 transitions. Second operand 7 states. [2020-10-28 12:03:26,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:26,470 INFO L93 Difference]: Finished difference Result 12962 states and 16220 transitions. [2020-10-28 12:03:26,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 12:03:26,472 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 289 [2020-10-28 12:03:26,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:26,513 INFO L225 Difference]: With dead ends: 12962 [2020-10-28 12:03:26,513 INFO L226 Difference]: Without dead ends: 6978 [2020-10-28 12:03:26,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:03:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6978 states. [2020-10-28 12:03:26,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6978 to 6578. [2020-10-28 12:03:26,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6578 states. [2020-10-28 12:03:26,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6578 states to 6578 states and 8221 transitions. [2020-10-28 12:03:26,705 INFO L78 Accepts]: Start accepts. Automaton has 6578 states and 8221 transitions. Word has length 289 [2020-10-28 12:03:26,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:26,705 INFO L481 AbstractCegarLoop]: Abstraction has 6578 states and 8221 transitions. [2020-10-28 12:03:26,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:26,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6578 states and 8221 transitions. [2020-10-28 12:03:26,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-28 12:03:26,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:26,716 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:26,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:03:26,716 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:26,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:26,717 INFO L82 PathProgramCache]: Analyzing trace with hash 618955002, now seen corresponding path program 1 times [2020-10-28 12:03:26,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:26,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364766629] [2020-10-28 12:03:26,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:26,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:26,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:26,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:27,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:30,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:30,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 12:03:30,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:03:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3690 [2020-10-28 12:03:30,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:30,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 181 [2020-10-28 12:03:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:03:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:30,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:30,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:30,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:30,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:30,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:30,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:03:30,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:30,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:30,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:30,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:30,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:30,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:30,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:30,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:03:30,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:30,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 12:03:30,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:30,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:30,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 12:03:30,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:30,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:03:30,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:30,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:30,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:30,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:03:30,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 12:03:30,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:30,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:30,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:03:30,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:31,187 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:31,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364766629] [2020-10-28 12:03:31,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:31,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:31,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652049060] [2020-10-28 12:03:31,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:31,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:31,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:31,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:31,189 INFO L87 Difference]: Start difference. First operand 6578 states and 8221 transitions. Second operand 7 states. [2020-10-28 12:03:34,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:34,908 INFO L93 Difference]: Finished difference Result 13370 states and 16791 transitions. [2020-10-28 12:03:34,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:03:34,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-28 12:03:34,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:34,934 INFO L225 Difference]: With dead ends: 13370 [2020-10-28 12:03:34,934 INFO L226 Difference]: Without dead ends: 6986 [2020-10-28 12:03:34,950 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-28 12:03:34,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6986 states. [2020-10-28 12:03:35,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6986 to 6772. [2020-10-28 12:03:35,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6772 states. [2020-10-28 12:03:35,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6772 states to 6772 states and 8402 transitions. [2020-10-28 12:03:35,113 INFO L78 Accepts]: Start accepts. Automaton has 6772 states and 8402 transitions. Word has length 305 [2020-10-28 12:03:35,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:35,113 INFO L481 AbstractCegarLoop]: Abstraction has 6772 states and 8402 transitions. [2020-10-28 12:03:35,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:35,114 INFO L276 IsEmpty]: Start isEmpty. Operand 6772 states and 8402 transitions. [2020-10-28 12:03:35,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-28 12:03:35,123 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:35,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:35,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:03:35,124 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:35,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1351519579, now seen corresponding path program 1 times [2020-10-28 12:03:35,125 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:35,125 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1344425074] [2020-10-28 12:03:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:35,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:35,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:36,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:36,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 12:03:36,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:36,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1279 [2020-10-28 12:03:36,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:36,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:36,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:03:36,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:36,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:36,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:36,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:36,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:36,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:03:36,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:36,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:36,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:36,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:36,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:36,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:36,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:36,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:36,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:36,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:36,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:36,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:03:36,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:36,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:36,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:36,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:03:36,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:36,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:36,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:36,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:36,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 12:03:36,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:36,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-28 12:03:36,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:36,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:36,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:36,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:03:36,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 214 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:03:37,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1344425074] [2020-10-28 12:03:37,119 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:37,119 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:37,119 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157286724] [2020-10-28 12:03:37,122 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:37,122 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:37,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:37,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:37,123 INFO L87 Difference]: Start difference. First operand 6772 states and 8402 transitions. Second operand 7 states. [2020-10-28 12:03:41,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:41,581 INFO L93 Difference]: Finished difference Result 13536 states and 16848 transitions. [2020-10-28 12:03:41,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:03:41,583 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-28 12:03:41,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:41,604 INFO L225 Difference]: With dead ends: 13536 [2020-10-28 12:03:41,604 INFO L226 Difference]: Without dead ends: 6960 [2020-10-28 12:03:41,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:03:41,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6960 states. [2020-10-28 12:03:41,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6960 to 6748. [2020-10-28 12:03:41,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6748 states. [2020-10-28 12:03:41,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6748 states to 6748 states and 8227 transitions. [2020-10-28 12:03:41,773 INFO L78 Accepts]: Start accepts. Automaton has 6748 states and 8227 transitions. Word has length 305 [2020-10-28 12:03:41,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:41,774 INFO L481 AbstractCegarLoop]: Abstraction has 6748 states and 8227 transitions. [2020-10-28 12:03:41,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:41,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6748 states and 8227 transitions. [2020-10-28 12:03:41,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-28 12:03:41,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:41,787 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:41,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:03:41,787 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:41,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:41,788 INFO L82 PathProgramCache]: Analyzing trace with hash 267641460, now seen corresponding path program 1 times [2020-10-28 12:03:41,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:41,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135561980] [2020-10-28 12:03:41,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:41,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:41,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:42,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:42,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:42,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-28 12:03:42,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:42,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-28 12:03:42,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:42,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:42,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:42,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-28 12:03:42,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 12:03:42,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:42,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:42,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:42,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:42,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:42,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:42,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:42,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:03:42,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:42,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:42,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:42,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:42,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:42,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:42,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:42,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:42,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:42,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:03:42,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:42,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:42,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:42,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:42,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:42,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:43,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:43,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:43,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:43,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:43,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 12:03:43,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:03:43,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:43,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:43,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:03:43,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:43,217 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:03:43,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135561980] [2020-10-28 12:03:43,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:43,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:03:43,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586878800] [2020-10-28 12:03:43,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:03:43,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:43,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:03:43,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:03:43,220 INFO L87 Difference]: Start difference. First operand 6748 states and 8227 transitions. Second operand 5 states. [2020-10-28 12:03:46,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:46,670 INFO L93 Difference]: Finished difference Result 14459 states and 17778 transitions. [2020-10-28 12:03:46,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:03:46,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 331 [2020-10-28 12:03:46,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:46,699 INFO L225 Difference]: With dead ends: 14459 [2020-10-28 12:03:46,699 INFO L226 Difference]: Without dead ends: 7907 [2020-10-28 12:03:46,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:03:46,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7907 states. [2020-10-28 12:03:46,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7907 to 7700. [2020-10-28 12:03:46,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7700 states. [2020-10-28 12:03:46,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7700 states to 7700 states and 9396 transitions. [2020-10-28 12:03:46,874 INFO L78 Accepts]: Start accepts. Automaton has 7700 states and 9396 transitions. Word has length 331 [2020-10-28 12:03:46,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:46,875 INFO L481 AbstractCegarLoop]: Abstraction has 7700 states and 9396 transitions. [2020-10-28 12:03:46,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:03:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 7700 states and 9396 transitions. [2020-10-28 12:03:46,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 344 [2020-10-28 12:03:46,889 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:46,889 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:46,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:03:46,890 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:46,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:46,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1246820476, now seen corresponding path program 1 times [2020-10-28 12:03:46,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:46,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986829927] [2020-10-28 12:03:46,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:46,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:47,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:47,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:48,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:50,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:50,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 359 [2020-10-28 12:03:50,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:03:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3256 [2020-10-28 12:03:50,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:50,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:03:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:03:50,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 12:03:50,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:50,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:50,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:50,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:50,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:50,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:03:50,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:50,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:03:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:50,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:03:50,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:50,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:50,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:50,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:50,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:50,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:50,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:03:50,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:50,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:50,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:03:50,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:50,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:50,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:50,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:50,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:50,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:50,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 12:03:50,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:50,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-28 12:03:50,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:50,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:50,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:03:50,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:50,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2020-10-28 12:03:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:50,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:50,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:50,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:03:50,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 12:03:50,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:50,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:03:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:03:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:03:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:51,062 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 304 proven. 6 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:03:51,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986829927] [2020-10-28 12:03:51,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:03:51,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:03:51,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63052224] [2020-10-28 12:03:51,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:03:51,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:51,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:03:51,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:51,064 INFO L87 Difference]: Start difference. First operand 7700 states and 9396 transitions. Second operand 7 states. [2020-10-28 12:03:54,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:54,797 INFO L93 Difference]: Finished difference Result 15802 states and 19413 transitions. [2020-10-28 12:03:54,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:03:54,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 343 [2020-10-28 12:03:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:54,821 INFO L225 Difference]: With dead ends: 15802 [2020-10-28 12:03:54,821 INFO L226 Difference]: Without dead ends: 8298 [2020-10-28 12:03:54,836 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:03:54,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8298 states. [2020-10-28 12:03:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8298 to 8276. [2020-10-28 12:03:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8276 states. [2020-10-28 12:03:55,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8276 states to 8276 states and 10085 transitions. [2020-10-28 12:03:55,029 INFO L78 Accepts]: Start accepts. Automaton has 8276 states and 10085 transitions. Word has length 343 [2020-10-28 12:03:55,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:55,030 INFO L481 AbstractCegarLoop]: Abstraction has 8276 states and 10085 transitions. [2020-10-28 12:03:55,030 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:03:55,030 INFO L276 IsEmpty]: Start isEmpty. Operand 8276 states and 10085 transitions. [2020-10-28 12:03:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-28 12:03:55,040 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:55,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:55,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:03:55,041 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:55,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:55,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1688297985, now seen corresponding path program 1 times [2020-10-28 12:03:55,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:55,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1032843242] [2020-10-28 12:03:55,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:55,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:55,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:55,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:55,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:55,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:55,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-28 12:03:55,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:03:55,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-28 12:03:55,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:55,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:55,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:55,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:03:55,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-28 12:03:55,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:56,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:03:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:56,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:56,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:56,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:03:56,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:03:56,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:03:56,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:56,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:56,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:03:56,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:56,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:03:56,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:56,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:56,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:56,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:56,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:03:56,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:56,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 12:03:56,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:56,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:03:56,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:03:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:03:56,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:03:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:56,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:56,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:56,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:03:56,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:03:56,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:03:56,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 12:03:56,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:03:56,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:03:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:03:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-28 12:03:56,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 12:03:56,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:03:56,679 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:03:56,680 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1032843242] [2020-10-28 12:03:56,680 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:03:56,680 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:03:56,680 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132236791] [2020-10-28 12:03:56,681 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:03:56,681 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:03:56,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:03:56,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:03:56,681 INFO L87 Difference]: Start difference. First operand 8276 states and 10085 transitions. Second operand 6 states. [2020-10-28 12:03:58,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:03:58,860 INFO L93 Difference]: Finished difference Result 16169 states and 19756 transitions. [2020-10-28 12:03:58,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:03:58,861 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 351 [2020-10-28 12:03:58,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:03:58,882 INFO L225 Difference]: With dead ends: 16169 [2020-10-28 12:03:58,883 INFO L226 Difference]: Without dead ends: 8089 [2020-10-28 12:03:58,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:03:58,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8089 states. [2020-10-28 12:03:59,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8089 to 8073. [2020-10-28 12:03:59,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8073 states. [2020-10-28 12:03:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8073 states to 8073 states and 9810 transitions. [2020-10-28 12:03:59,056 INFO L78 Accepts]: Start accepts. Automaton has 8073 states and 9810 transitions. Word has length 351 [2020-10-28 12:03:59,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:03:59,057 INFO L481 AbstractCegarLoop]: Abstraction has 8073 states and 9810 transitions. [2020-10-28 12:03:59,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:03:59,057 INFO L276 IsEmpty]: Start isEmpty. Operand 8073 states and 9810 transitions. [2020-10-28 12:03:59,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-28 12:03:59,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:03:59,069 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:03:59,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:03:59,069 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:03:59,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:03:59,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1670243934, now seen corresponding path program 1 times [2020-10-28 12:03:59,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:03:59,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [336956186] [2020-10-28 12:03:59,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:03:59,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:03:59,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:59,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:03:59,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:03,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:03,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-28 12:04:03,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:03,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4330 [2020-10-28 12:04:03,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:03,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:03,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:03,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:04:03,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:04:03,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:03,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:03,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:03,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:03,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:03,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:03,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:03,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:04:03,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:03,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:03,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:03,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:03,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:03,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:03,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:03,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:03,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:03,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:03,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 12:04:03,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:03,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:03,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:03,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:03,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:04:03,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:03,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:03,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:03,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:04:03,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:03,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 12:04:03,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:03,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:03,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:03,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:04:03,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:04,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-28 12:04:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:04,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:04,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:04,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:04:04,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:04,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:04:04,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:04,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:04:04,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:04,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 267 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 12:04:04,149 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [336956186] [2020-10-28 12:04:04,150 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:04,150 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:04,150 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088048514] [2020-10-28 12:04:04,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:04,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:04,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:04,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:04,152 INFO L87 Difference]: Start difference. First operand 8073 states and 9810 transitions. Second operand 7 states. [2020-10-28 12:04:07,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:07,846 INFO L93 Difference]: Finished difference Result 19593 states and 24188 transitions. [2020-10-28 12:04:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:04:07,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 372 [2020-10-28 12:04:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:07,922 INFO L225 Difference]: With dead ends: 19593 [2020-10-28 12:04:07,922 INFO L226 Difference]: Without dead ends: 11716 [2020-10-28 12:04:07,932 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11716 states. [2020-10-28 12:04:08,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11716 to 11509. [2020-10-28 12:04:08,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11509 states. [2020-10-28 12:04:08,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11509 states to 11509 states and 14033 transitions. [2020-10-28 12:04:08,173 INFO L78 Accepts]: Start accepts. Automaton has 11509 states and 14033 transitions. Word has length 372 [2020-10-28 12:04:08,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:08,173 INFO L481 AbstractCegarLoop]: Abstraction has 11509 states and 14033 transitions. [2020-10-28 12:04:08,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:08,174 INFO L276 IsEmpty]: Start isEmpty. Operand 11509 states and 14033 transitions. [2020-10-28 12:04:08,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-28 12:04:08,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:08,186 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:08,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:04:08,186 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:08,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:08,187 INFO L82 PathProgramCache]: Analyzing trace with hash -523846188, now seen corresponding path program 1 times [2020-10-28 12:04:08,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:08,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [774895634] [2020-10-28 12:04:08,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:08,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:08,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:08,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:09,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:11,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:11,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 388 [2020-10-28 12:04:11,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:11,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3396 [2020-10-28 12:04:11,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:11,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:11,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:11,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 325 [2020-10-28 12:04:11,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 12:04:11,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:11,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:11,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:11,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:11,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:11,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:11,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:04:11,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:11,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:11,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:11,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:11,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:11,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:11,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:11,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:11,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:04:11,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:04:11,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:11,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:11,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:11,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:11,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:04:11,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:12,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:12,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-28 12:04:12,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:12,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 12:04:12,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:12,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:12,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-10-28 12:04:12,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:12,294 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-28 12:04:12,294 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [774895634] [2020-10-28 12:04:12,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:12,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:04:12,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815489441] [2020-10-28 12:04:12,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:04:12,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:12,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:04:12,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:04:12,296 INFO L87 Difference]: Start difference. First operand 11509 states and 14033 transitions. Second operand 5 states. [2020-10-28 12:04:15,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:15,168 INFO L93 Difference]: Finished difference Result 13222 states and 16190 transitions. [2020-10-28 12:04:15,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:04:15,169 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 374 [2020-10-28 12:04:15,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:15,203 INFO L225 Difference]: With dead ends: 13222 [2020-10-28 12:04:15,203 INFO L226 Difference]: Without dead ends: 13219 [2020-10-28 12:04:15,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:15,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13219 states. [2020-10-28 12:04:15,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13219 to 12643. [2020-10-28 12:04:15,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12643 states. [2020-10-28 12:04:15,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12643 states to 12643 states and 15504 transitions. [2020-10-28 12:04:15,521 INFO L78 Accepts]: Start accepts. Automaton has 12643 states and 15504 transitions. Word has length 374 [2020-10-28 12:04:15,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:15,522 INFO L481 AbstractCegarLoop]: Abstraction has 12643 states and 15504 transitions. [2020-10-28 12:04:15,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:04:15,522 INFO L276 IsEmpty]: Start isEmpty. Operand 12643 states and 15504 transitions. [2020-10-28 12:04:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-28 12:04:15,537 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:15,537 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:15,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:04:15,538 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:15,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:15,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2134127239, now seen corresponding path program 1 times [2020-10-28 12:04:15,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:15,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878966821] [2020-10-28 12:04:15,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:15,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:15,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:15,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:17,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:19,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:19,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-28 12:04:19,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:19,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3560 [2020-10-28 12:04:19,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:19,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:19,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 347 [2020-10-28 12:04:19,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 12:04:19,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:19,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:19,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:19,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:19,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:19,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:19,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:04:19,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:19,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:19,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:19,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:19,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:19,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:19,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:19,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:19,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:19,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:19,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:04:19,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:04:19,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:19,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:19,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:19,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:04:19,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:19,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:19,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:19,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:04:19,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:19,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:04:19,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:19,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:19,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:19,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:19,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:19,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:04:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:19,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:19,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:19,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:04:19,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:19,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 12:04:19,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:19,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:04:19,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:19,748 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 162 proven. 3 refuted. 0 times theorem prover too weak. 287 trivial. 0 not checked. [2020-10-28 12:04:19,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878966821] [2020-10-28 12:04:19,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:19,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:04:19,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373714065] [2020-10-28 12:04:19,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:04:19,749 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:19,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:04:19,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:04:19,750 INFO L87 Difference]: Start difference. First operand 12643 states and 15504 transitions. Second operand 5 states. [2020-10-28 12:04:23,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:23,885 INFO L93 Difference]: Finished difference Result 26627 states and 32705 transitions. [2020-10-28 12:04:23,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:04:23,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 394 [2020-10-28 12:04:23,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:23,918 INFO L225 Difference]: With dead ends: 26627 [2020-10-28 12:04:23,919 INFO L226 Difference]: Without dead ends: 14180 [2020-10-28 12:04:23,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:23,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14180 states. [2020-10-28 12:04:24,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14180 to 14155. [2020-10-28 12:04:24,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14155 states. [2020-10-28 12:04:24,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14155 states to 14155 states and 16964 transitions. [2020-10-28 12:04:24,213 INFO L78 Accepts]: Start accepts. Automaton has 14155 states and 16964 transitions. Word has length 394 [2020-10-28 12:04:24,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:24,213 INFO L481 AbstractCegarLoop]: Abstraction has 14155 states and 16964 transitions. [2020-10-28 12:04:24,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:04:24,214 INFO L276 IsEmpty]: Start isEmpty. Operand 14155 states and 16964 transitions. [2020-10-28 12:04:24,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-28 12:04:24,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:24,232 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:24,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:04:24,233 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:24,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:24,233 INFO L82 PathProgramCache]: Analyzing trace with hash 523581767, now seen corresponding path program 1 times [2020-10-28 12:04:24,234 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:24,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [739311315] [2020-10-28 12:04:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:24,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:24,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:25,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:25,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-28 12:04:25,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:25,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1505 [2020-10-28 12:04:25,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:25,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:04:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-28 12:04:25,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:25,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:25,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:25,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:25,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:25,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:04:25,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:25,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:25,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:25,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:26,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:26,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:26,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:26,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:26,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:04:26,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:26,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:04:26,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:26,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:26,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:26,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:26,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:26,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:26,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:04:26,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:26,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:26,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:26,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:26,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 12:04:26,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:26,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:26,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:04:26,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:26,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:04:26,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:26,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:26,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:26,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:04:26,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:26,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-28 12:04:26,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:26,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:26,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:26,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:04:26,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 338 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:04:26,461 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [739311315] [2020-10-28 12:04:26,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:26,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:26,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031280892] [2020-10-28 12:04:26,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:26,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:26,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:26,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:26,463 INFO L87 Difference]: Start difference. First operand 14155 states and 16964 transitions. Second operand 7 states. [2020-10-28 12:04:31,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:31,475 INFO L93 Difference]: Finished difference Result 30618 states and 36899 transitions. [2020-10-28 12:04:31,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:04:31,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 398 [2020-10-28 12:04:31,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:31,513 INFO L225 Difference]: With dead ends: 30618 [2020-10-28 12:04:31,514 INFO L226 Difference]: Without dead ends: 16659 [2020-10-28 12:04:31,531 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:31,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16659 states. [2020-10-28 12:04:31,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16659 to 16072. [2020-10-28 12:04:31,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16072 states. [2020-10-28 12:04:31,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16072 states to 16072 states and 19173 transitions. [2020-10-28 12:04:31,865 INFO L78 Accepts]: Start accepts. Automaton has 16072 states and 19173 transitions. Word has length 398 [2020-10-28 12:04:31,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:31,866 INFO L481 AbstractCegarLoop]: Abstraction has 16072 states and 19173 transitions. [2020-10-28 12:04:31,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:31,866 INFO L276 IsEmpty]: Start isEmpty. Operand 16072 states and 19173 transitions. [2020-10-28 12:04:31,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-10-28 12:04:31,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:31,887 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:31,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:04:31,887 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:31,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:31,888 INFO L82 PathProgramCache]: Analyzing trace with hash 1198929450, now seen corresponding path program 1 times [2020-10-28 12:04:31,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:31,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968569839] [2020-10-28 12:04:31,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:31,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:32,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:32,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 428 [2020-10-28 12:04:32,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:32,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 500 [2020-10-28 12:04:32,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:32,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:04:32,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 12:04:32,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:32,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:32,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:32,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:32,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:32,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:04:32,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:32,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:32,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:32,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:32,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:32,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:32,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:32,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:32,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:04:32,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:32,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:04:32,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:32,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:32,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:32,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:32,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:04:32,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:32,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:32,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:32,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:32,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 12:04:32,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:32,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:32,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:04:32,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:32,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:04:32,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:32,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:33,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:33,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:04:33,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:33,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-28 12:04:33,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:33,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:33,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:04:33,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:33,454 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 366 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:04:33,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968569839] [2020-10-28 12:04:33,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:33,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:33,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508525057] [2020-10-28 12:04:33,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:33,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:33,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:33,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:33,456 INFO L87 Difference]: Start difference. First operand 16072 states and 19173 transitions. Second operand 7 states. [2020-10-28 12:04:37,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:37,469 INFO L93 Difference]: Finished difference Result 32343 states and 38582 transitions. [2020-10-28 12:04:37,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:04:37,470 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 412 [2020-10-28 12:04:37,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:37,496 INFO L225 Difference]: With dead ends: 32343 [2020-10-28 12:04:37,497 INFO L226 Difference]: Without dead ends: 16467 [2020-10-28 12:04:37,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:04:37,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16467 states. [2020-10-28 12:04:37,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16467 to 16262. [2020-10-28 12:04:37,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16262 states. [2020-10-28 12:04:37,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16262 states to 16262 states and 19385 transitions. [2020-10-28 12:04:37,820 INFO L78 Accepts]: Start accepts. Automaton has 16262 states and 19385 transitions. Word has length 412 [2020-10-28 12:04:37,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:37,821 INFO L481 AbstractCegarLoop]: Abstraction has 16262 states and 19385 transitions. [2020-10-28 12:04:37,821 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:37,821 INFO L276 IsEmpty]: Start isEmpty. Operand 16262 states and 19385 transitions. [2020-10-28 12:04:37,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2020-10-28 12:04:37,858 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:37,858 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:37,858 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:04:37,858 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:37,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:37,859 INFO L82 PathProgramCache]: Analyzing trace with hash -2058411339, now seen corresponding path program 1 times [2020-10-28 12:04:37,859 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:37,859 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426541337] [2020-10-28 12:04:37,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:37,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:38,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:40,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:40,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 515 [2020-10-28 12:04:40,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:40,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2872 [2020-10-28 12:04:40,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:40,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:40,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:40,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-28 12:04:40,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 12:04:40,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:41,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:41,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:41,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:41,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:04:41,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:41,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:41,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:41,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:41,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,084 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:04:41,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:41,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:04:41,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:41,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:41,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:41,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:04:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:41,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:41,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:41,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:04:41,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:41,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:41,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:04:41,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:41,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:04:41,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:41,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 12:04:41,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:41,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:04:41,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-28 12:04:41,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:41,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:04:41,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 12:04:41,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:41,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:04:41,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,566 INFO L134 CoverageAnalysis]: Checked inductivity of 791 backedges. 506 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-28 12:04:41,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426541337] [2020-10-28 12:04:41,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:41,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:41,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646075397] [2020-10-28 12:04:41,568 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:41,568 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:41,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:41,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:41,569 INFO L87 Difference]: Start difference. First operand 16262 states and 19385 transitions. Second operand 7 states. [2020-10-28 12:04:47,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:47,613 INFO L93 Difference]: Finished difference Result 38015 states and 45534 transitions. [2020-10-28 12:04:47,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:04:47,614 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 497 [2020-10-28 12:04:47,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:47,652 INFO L225 Difference]: With dead ends: 38015 [2020-10-28 12:04:47,652 INFO L226 Difference]: Without dead ends: 21181 [2020-10-28 12:04:47,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:47,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21181 states. [2020-10-28 12:04:48,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21181 to 20603. [2020-10-28 12:04:48,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20603 states. [2020-10-28 12:04:48,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20603 states to 20603 states and 24357 transitions. [2020-10-28 12:04:48,084 INFO L78 Accepts]: Start accepts. Automaton has 20603 states and 24357 transitions. Word has length 497 [2020-10-28 12:04:48,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:48,084 INFO L481 AbstractCegarLoop]: Abstraction has 20603 states and 24357 transitions. [2020-10-28 12:04:48,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:48,085 INFO L276 IsEmpty]: Start isEmpty. Operand 20603 states and 24357 transitions. [2020-10-28 12:04:48,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-28 12:04:48,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:48,109 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:48,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:04:48,110 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:48,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:48,110 INFO L82 PathProgramCache]: Analyzing trace with hash -633908875, now seen corresponding path program 1 times [2020-10-28 12:04:48,112 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:48,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309024462] [2020-10-28 12:04:48,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:48,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:48,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:48,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:49,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:53,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:53,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 531 [2020-10-28 12:04:53,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:53,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 12:04:53,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:53,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:53,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 362 [2020-10-28 12:04:53,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 12:04:53,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:53,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:53,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:53,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:53,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:53,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:53,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:04:53,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:53,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:53,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:53,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:53,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:53,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:53,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:53,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:04:53,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:04:53,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:53,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:53,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:53,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:53,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:04:53,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:53,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:53,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:53,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:04:53,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:04:53,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:53,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:53,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:53,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:53,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:04:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:53,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:53,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:53,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 12:04:53,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 12:04:53,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:53,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:53,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:04:53,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:53,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-28 12:04:53,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:53,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:53,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:04:53,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:04:53,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:53,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:53,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:04:53,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:54,049 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 12:04:54,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309024462] [2020-10-28 12:04:54,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:54,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:54,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689956374] [2020-10-28 12:04:54,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:54,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:54,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:54,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:54,051 INFO L87 Difference]: Start difference. First operand 20603 states and 24357 transitions. Second operand 7 states. [2020-10-28 12:04:57,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:57,854 INFO L93 Difference]: Finished difference Result 38569 states and 45674 transitions. [2020-10-28 12:04:57,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:04:57,857 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 513 [2020-10-28 12:04:57,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:57,891 INFO L225 Difference]: With dead ends: 38569 [2020-10-28 12:04:57,891 INFO L226 Difference]: Without dead ends: 20998 [2020-10-28 12:04:57,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:57,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20998 states. [2020-10-28 12:04:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20998 to 20609. [2020-10-28 12:04:58,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20609 states. [2020-10-28 12:04:58,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20609 states to 20609 states and 24302 transitions. [2020-10-28 12:04:58,240 INFO L78 Accepts]: Start accepts. Automaton has 20609 states and 24302 transitions. Word has length 513 [2020-10-28 12:04:58,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:58,241 INFO L481 AbstractCegarLoop]: Abstraction has 20609 states and 24302 transitions. [2020-10-28 12:04:58,241 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:58,241 INFO L276 IsEmpty]: Start isEmpty. Operand 20609 states and 24302 transitions. [2020-10-28 12:04:58,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-10-28 12:04:58,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:58,266 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:58,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:04:58,266 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:58,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:58,267 INFO L82 PathProgramCache]: Analyzing trace with hash -738371423, now seen corresponding path program 1 times [2020-10-28 12:04:58,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:58,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596673535] [2020-10-28 12:04:58,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:58,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:58,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:58,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:00,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:01,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:03,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:03,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 12:05:03,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:05:03,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-28 12:05:03,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:03,401 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:05:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-28 12:05:03,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-28 12:05:03,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:03,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:03,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:03,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:03,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:03,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:03,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:03,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:05:03,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:03,586 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:03,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:03,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:03,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:03,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:03,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:03,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:05:03,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:03,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:05:03,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:03,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:03,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:03,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:03,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:05:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:03,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:03,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:03,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:05:03,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:03,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:05:03,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:03,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:03,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:05:03,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:03,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:05:03,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:03,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:04,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:04,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:05:04,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:04,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 12:05:04,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:04,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:05:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:04,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:05:04,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:04,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:05:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:04,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:04,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:04,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:05:04,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-28 12:05:04,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:04,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:04,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:05:04,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:04,796 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 613 proven. 103 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 12:05:04,796 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596673535] [2020-10-28 12:05:04,796 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:04,797 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 12:05:04,797 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634592743] [2020-10-28 12:05:04,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 12:05:04,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:04,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 12:05:04,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:05:04,798 INFO L87 Difference]: Start difference. First operand 20609 states and 24302 transitions. Second operand 10 states. [2020-10-28 12:05:10,178 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 73 [2020-10-28 12:05:11,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:11,195 INFO L93 Difference]: Finished difference Result 39550 states and 46680 transitions. [2020-10-28 12:05:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 12:05:11,197 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 514 [2020-10-28 12:05:11,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:11,231 INFO L225 Difference]: With dead ends: 39550 [2020-10-28 12:05:11,232 INFO L226 Difference]: Without dead ends: 21973 [2020-10-28 12:05:11,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2020-10-28 12:05:11,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21973 states. [2020-10-28 12:05:11,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21973 to 21575. [2020-10-28 12:05:11,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21575 states. [2020-10-28 12:05:11,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21575 states to 21575 states and 25414 transitions. [2020-10-28 12:05:11,726 INFO L78 Accepts]: Start accepts. Automaton has 21575 states and 25414 transitions. Word has length 514 [2020-10-28 12:05:11,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:11,726 INFO L481 AbstractCegarLoop]: Abstraction has 21575 states and 25414 transitions. [2020-10-28 12:05:11,728 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 12:05:11,729 INFO L276 IsEmpty]: Start isEmpty. Operand 21575 states and 25414 transitions. [2020-10-28 12:05:11,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 547 [2020-10-28 12:05:11,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:11,752 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:11,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:05:11,753 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:11,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:11,753 INFO L82 PathProgramCache]: Analyzing trace with hash 862330580, now seen corresponding path program 1 times [2020-10-28 12:05:11,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:11,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [907265025] [2020-10-28 12:05:11,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:11,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:11,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:12,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:16,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:16,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 564 [2020-10-28 12:05:16,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:16,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-28 12:05:16,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:16,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 394 [2020-10-28 12:05:16,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:05:16,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:17,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:17,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:17,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:17,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:17,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:17,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:17,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:05:17,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:17,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:17,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:17,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:17,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:17,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:17,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:05:17,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:17,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:05:17,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:17,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:17,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:17,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:17,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:17,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:17,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:05:17,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:17,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:17,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:17,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:05:17,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:17,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:05:17,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:17,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:17,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:17,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:05:17,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:17,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:17,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:17,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 12:05:17,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 12:05:17,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:17,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 12:05:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:17,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-28 12:05:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:17,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:17,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:05:17,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:17,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 12:05:17,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:17,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:17,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:05:17,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:17,940 INFO L134 CoverageAnalysis]: Checked inductivity of 804 backedges. 507 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 12:05:17,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [907265025] [2020-10-28 12:05:17,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:17,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:17,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068051050] [2020-10-28 12:05:17,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:17,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:17,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:17,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:17,943 INFO L87 Difference]: Start difference. First operand 21575 states and 25414 transitions. Second operand 7 states. [2020-10-28 12:05:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:22,638 INFO L93 Difference]: Finished difference Result 42631 states and 50278 transitions. [2020-10-28 12:05:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:22,639 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 546 [2020-10-28 12:05:22,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:22,685 INFO L225 Difference]: With dead ends: 42631 [2020-10-28 12:05:22,686 INFO L226 Difference]: Without dead ends: 21252 [2020-10-28 12:05:22,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:05:22,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21252 states. [2020-10-28 12:05:23,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21252 to 20851. [2020-10-28 12:05:23,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20851 states. [2020-10-28 12:05:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20851 states to 20851 states and 23953 transitions. [2020-10-28 12:05:23,060 INFO L78 Accepts]: Start accepts. Automaton has 20851 states and 23953 transitions. Word has length 546 [2020-10-28 12:05:23,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:23,061 INFO L481 AbstractCegarLoop]: Abstraction has 20851 states and 23953 transitions. [2020-10-28 12:05:23,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand 20851 states and 23953 transitions. [2020-10-28 12:05:23,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 550 [2020-10-28 12:05:23,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:23,090 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:23,090 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:05:23,090 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:23,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:23,090 INFO L82 PathProgramCache]: Analyzing trace with hash 1996073177, now seen corresponding path program 1 times [2020-10-28 12:05:23,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:23,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566166986] [2020-10-28 12:05:23,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:23,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:23,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:26,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:27,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:28,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:28,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 567 [2020-10-28 12:05:28,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:05:28,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-28 12:05:28,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:28,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 12:05:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:05:28,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 246 [2020-10-28 12:05:28,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:28,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:28,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:28,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:28,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:28,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:28,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:28,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:28,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:28,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:28,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:28,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:28,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:28,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:28,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:28,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:28,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:05:28,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:28,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:05:28,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:28,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:28,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:28,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:28,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:05:28,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:28,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:28,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:28,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:28,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:28,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 12:05:28,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:28,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:28,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:28,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:28,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:05:28,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:28,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:05:28,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:28,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:28,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:28,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:05:28,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:28,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-28 12:05:28,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:28,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:28,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:05:28,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:28,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:05:28,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:29,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2020-10-28 12:05:29,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:29,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:29,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:29,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:05:29,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:29,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 12:05:29,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:29,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:29,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 12:05:29,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:29,749 INFO L134 CoverageAnalysis]: Checked inductivity of 887 backedges. 666 proven. 103 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-10-28 12:05:29,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566166986] [2020-10-28 12:05:29,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:29,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 12:05:29,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016492441] [2020-10-28 12:05:29,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 12:05:29,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:29,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 12:05:29,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:05:29,751 INFO L87 Difference]: Start difference. First operand 20851 states and 23953 transitions. Second operand 10 states. [2020-10-28 12:05:33,630 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-28 12:05:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:36,884 INFO L93 Difference]: Finished difference Result 39063 states and 44853 transitions. [2020-10-28 12:05:36,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 12:05:36,885 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 549 [2020-10-28 12:05:36,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:36,919 INFO L225 Difference]: With dead ends: 39063 [2020-10-28 12:05:36,919 INFO L226 Difference]: Without dead ends: 21244 [2020-10-28 12:05:36,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=129, Invalid=377, Unknown=0, NotChecked=0, Total=506 [2020-10-28 12:05:36,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21244 states. [2020-10-28 12:05:37,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21244 to 20654. [2020-10-28 12:05:37,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20654 states. [2020-10-28 12:05:37,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20654 states to 20654 states and 23695 transitions. [2020-10-28 12:05:37,272 INFO L78 Accepts]: Start accepts. Automaton has 20654 states and 23695 transitions. Word has length 549 [2020-10-28 12:05:37,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:37,273 INFO L481 AbstractCegarLoop]: Abstraction has 20654 states and 23695 transitions. [2020-10-28 12:05:37,273 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 12:05:37,273 INFO L276 IsEmpty]: Start isEmpty. Operand 20654 states and 23695 transitions. [2020-10-28 12:05:37,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 629 [2020-10-28 12:05:37,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:37,304 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:37,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 12:05:37,304 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:37,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:37,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1155065903, now seen corresponding path program 1 times [2020-10-28 12:05:37,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:37,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878029646] [2020-10-28 12:05:37,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:37,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:37,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:39,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:42,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:42,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 646 [2020-10-28 12:05:42,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:42,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 12:05:42,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:42,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 338 [2020-10-28 12:05:42,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:05:42,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:42,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:42,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:42,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:42,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:42,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:42,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:42,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:42,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:42,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:42,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:42,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:42,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:42,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:42,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:42,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 172 [2020-10-28 12:05:42,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:42,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 12:05:42,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:42,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:42,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:42,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:42,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:42,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-28 12:05:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:42,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:42,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:42,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 12:05:42,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:42,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 12:05:42,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:42,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:42,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 12:05:42,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:42,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 334 [2020-10-28 12:05:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:42,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:43,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:43,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:05:43,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:43,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 12:05:43,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:43,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:43,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:43,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:43,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:05:43,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:43,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 471 [2020-10-28 12:05:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:43,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:43,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:43,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-28 12:05:43,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:05:43,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:43,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-28 12:05:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0