/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/array-tiling/rewnifrev.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 09:32:41,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 09:32:41,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 09:32:41,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 09:32:41,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 09:32:41,898 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 09:32:41,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 09:32:41,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 09:32:41,909 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 09:32:41,915 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 09:32:41,916 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 09:32:41,918 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 09:32:41,919 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 09:32:41,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 09:32:41,925 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 09:32:41,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 09:32:41,929 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 09:32:41,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 09:32:41,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 09:32:41,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 09:32:41,960 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 09:32:41,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 09:32:41,963 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 09:32:41,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 09:32:41,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 09:32:41,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 09:32:41,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 09:32:41,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 09:32:41,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 09:32:41,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 09:32:41,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 09:32:41,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 09:32:41,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 09:32:41,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 09:32:41,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 09:32:41,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 09:32:41,975 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 09:32:41,975 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 09:32:41,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 09:32:41,976 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 09:32:41,977 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 09:32:41,978 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 09:32:42,005 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 09:32:42,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 09:32:42,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 09:32:42,008 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 09:32:42,008 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 09:32:42,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 09:32:42,008 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 09:32:42,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 09:32:42,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 09:32:42,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 09:32:42,009 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 09:32:42,009 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 09:32:42,009 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 09:32:42,010 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 09:32:42,010 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 09:32:42,010 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 09:32:42,010 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 09:32:42,010 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 09:32:42,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 09:32:42,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 09:32:42,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 09:32:42,011 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 09:32:42,011 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 09:32:42,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 09:32:42,012 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 09:32:42,012 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 09:32:42,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 09:32:42,012 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 09:32:42,013 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 09:32:42,013 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 09:32:42,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 09:32:42,413 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 09:32:42,416 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 09:32:42,418 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 09:32:42,419 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 09:32:42,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-tiling/rewnifrev.c [2020-10-28 09:32:42,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fff9f29cf/141baba792674369bc2988337030ecdd/FLAG977353c5e [2020-10-28 09:32:43,220 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 09:32:43,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-tiling/rewnifrev.c [2020-10-28 09:32:43,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fff9f29cf/141baba792674369bc2988337030ecdd/FLAG977353c5e [2020-10-28 09:32:43,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fff9f29cf/141baba792674369bc2988337030ecdd [2020-10-28 09:32:43,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 09:32:43,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 09:32:43,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 09:32:43,595 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 09:32:43,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 09:32:43,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:32:43" (1/1) ... [2020-10-28 09:32:43,609 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@103c545b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:43, skipping insertion in model container [2020-10-28 09:32:43,610 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 09:32:43" (1/1) ... [2020-10-28 09:32:43,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 09:32:43,636 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 09:32:43,801 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:32:43,812 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 09:32:43,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 09:32:43,849 INFO L208 MainTranslator]: Completed translation [2020-10-28 09:32:43,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:43 WrapperNode [2020-10-28 09:32:43,850 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 09:32:43,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 09:32:43,852 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 09:32:43,852 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 09:32:43,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:43" (1/1) ... [2020-10-28 09:32:43,866 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:43" (1/1) ... [2020-10-28 09:32:43,874 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:43" (1/1) ... [2020-10-28 09:32:43,874 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:43" (1/1) ... [2020-10-28 09:32:43,883 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:43" (1/1) ... [2020-10-28 09:32:43,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:43" (1/1) ... [2020-10-28 09:32:43,889 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:43" (1/1) ... [2020-10-28 09:32:43,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 09:32:43,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 09:32:43,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 09:32:43,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 09:32:43,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:43" (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 09:32:43,962 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 09:32:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 09:32:43,963 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 09:32:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-28 09:32:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 09:32:43,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 09:32:43,964 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 09:32:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 09:32:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 09:32:43,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 09:32:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-28 09:32:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 09:32:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 09:32:43,967 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-28 09:32:43,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 09:32:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-28 09:32:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 09:32:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 09:32:43,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 09:32:43,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 09:32:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 09:32:43,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 09:32:44,258 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 09:32:44,258 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-28 09:32:44,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:32:44 BoogieIcfgContainer [2020-10-28 09:32:44,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 09:32:44,288 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 09:32:44,288 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 09:32:44,300 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 09:32:44,301 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 09:32:43" (1/3) ... [2020-10-28 09:32:44,301 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4ad049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:32:44, skipping insertion in model container [2020-10-28 09:32:44,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 09:32:43" (2/3) ... [2020-10-28 09:32:44,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f4ad049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 09:32:44, skipping insertion in model container [2020-10-28 09:32:44,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 09:32:44" (3/3) ... [2020-10-28 09:32:44,319 INFO L111 eAbstractionObserver]: Analyzing ICFG rewnifrev.c [2020-10-28 09:32:44,347 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 09:32:44,356 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 09:32:44,389 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 09:32:44,460 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 09:32:44,463 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 09:32:44,463 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 09:32:44,464 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 09:32:44,464 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 09:32:44,464 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 09:32:44,464 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 09:32:44,464 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 09:32:44,504 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-28 09:32:44,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 09:32:44,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:32:44,520 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:32:44,523 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:32:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:32:44,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1534732962, now seen corresponding path program 1 times [2020-10-28 09:32:44,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:32:44,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807206288] [2020-10-28 09:32:44,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:32:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:44,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:44,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:44,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 09:32:44,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:44,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 09:32:44,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:44,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:32:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 09:32:44,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:32:44,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:32:45,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:32:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:45,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:45,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:45,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:32:45,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:45,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 09:32:45,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:45,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:32:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:45,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:32:45,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:45,045 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 09:32:45,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807206288] [2020-10-28 09:32:45,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:32:45,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 09:32:45,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688724739] [2020-10-28 09:32:45,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 09:32:45,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:32:45,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 09:32:45,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:32:45,073 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 3 states. [2020-10-28 09:32:45,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:32:45,177 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-10-28 09:32:45,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 09:32:45,179 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-28 09:32:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:32:45,187 INFO L225 Difference]: With dead ends: 48 [2020-10-28 09:32:45,187 INFO L226 Difference]: Without dead ends: 23 [2020-10-28 09:32:45,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 09:32:45,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-28 09:32:45,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-28 09:32:45,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-28 09:32:45,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-28 09:32:45,235 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-10-28 09:32:45,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:32:45,236 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-28 09:32:45,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 09:32:45,236 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-28 09:32:45,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-28 09:32:45,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:32:45,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:32:45,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 09:32:45,238 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:32:45,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:32:45,239 INFO L82 PathProgramCache]: Analyzing trace with hash 353035087, now seen corresponding path program 1 times [2020-10-28 09:32:45,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:32:45,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52272918] [2020-10-28 09:32:45,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:32:45,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:45,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:45,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:45,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-28 09:32:45,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:45,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 09:32:45,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:45,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:32:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:32:45,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 09:32:45,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:32:45,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:32:45,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:45,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:45,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:45,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:32:45,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:45,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 09:32:45,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:45,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:32:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:45,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:32:45,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:32:45,535 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 09:32:45,535 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52272918] [2020-10-28 09:32:45,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 09:32:45,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 09:32:45,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619294015] [2020-10-28 09:32:45,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 09:32:45,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:32:45,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 09:32:45,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:32:45,543 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 4 states. [2020-10-28 09:32:45,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:32:45,633 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2020-10-28 09:32:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 09:32:45,633 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-28 09:32:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:32:45,635 INFO L225 Difference]: With dead ends: 43 [2020-10-28 09:32:45,635 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 09:32:45,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 09:32:45,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 09:32:45,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-10-28 09:32:45,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-28 09:32:45,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-28 09:32:45,646 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 15 [2020-10-28 09:32:45,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:32:45,646 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-28 09:32:45,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 09:32:45,646 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-28 09:32:45,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-28 09:32:45,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:32:45,647 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:32:45,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 09:32:45,648 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:32:45,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:32:45,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1307166964, now seen corresponding path program 1 times [2020-10-28 09:32:45,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:32:45,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097138540] [2020-10-28 09:32:45,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:32:45,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:45,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:45,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:45,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:46,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:46,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 09:32:46,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 09:32:46,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-28 09:32:46,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:46,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 09:32:46,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:32:46,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:32:46,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:32:46,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:32:46,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:46,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:46,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:46,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:32:46,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:46,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 09:32:46,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:46,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:32:46,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:46,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:32:46,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:46,474 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:32:46,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097138540] [2020-10-28 09:32:46,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:32:46,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 09:32:46,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642385450] [2020-10-28 09:32:46,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 09:32:46,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:32:46,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 09:32:46,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:32:46,477 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 5 states. [2020-10-28 09:32:46,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:32:46,580 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-10-28 09:32:46,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 09:32:46,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-28 09:32:46,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:32:46,583 INFO L225 Difference]: With dead ends: 44 [2020-10-28 09:32:46,583 INFO L226 Difference]: Without dead ends: 32 [2020-10-28 09:32:46,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 09:32:46,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-28 09:32:46,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-10-28 09:32:46,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 09:32:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-28 09:32:46,596 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 19 [2020-10-28 09:32:46,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:32:46,596 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-28 09:32:46,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 09:32:46,596 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-28 09:32:46,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 09:32:46,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:32:46,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:32:46,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 09:32:46,598 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:32:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:32:46,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1246971493, now seen corresponding path program 1 times [2020-10-28 09:32:46,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:32:46,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046700987] [2020-10-28 09:32:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:32:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:46,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:46,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:46,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:46,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:46,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:47,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:47,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:47,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:48,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:48,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 09:32:48,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-28 09:32:48,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2180 [2020-10-28 09:32:48,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:48,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:48,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 09:32:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:32:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 09:32:48,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 09:32:49,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:32:49,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:49,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:49,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:49,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:32:49,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 09:32:49,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:49,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:32:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:32:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 09:32:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:32:49,103 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046700987] [2020-10-28 09:32:49,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:32:49,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:32:49,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958400754] [2020-10-28 09:32:49,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:32:49,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:32:49,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:32:49,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:32:49,109 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 12 states. [2020-10-28 09:32:49,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:32:49,479 INFO L93 Difference]: Finished difference Result 39 states and 41 transitions. [2020-10-28 09:32:49,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:32:49,480 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 23 [2020-10-28 09:32:49,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:32:49,481 INFO L225 Difference]: With dead ends: 39 [2020-10-28 09:32:49,481 INFO L226 Difference]: Without dead ends: 36 [2020-10-28 09:32:49,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:32:49,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-28 09:32:49,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-28 09:32:49,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-28 09:32:49,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-28 09:32:49,490 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 23 [2020-10-28 09:32:49,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:32:49,491 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-28 09:32:49,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:32:49,491 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-28 09:32:49,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-28 09:32:49,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:32:49,492 INFO L422 BasicCegarLoop]: trace histogram [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 09:32:49,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 09:32:49,493 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:32:49,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:32:49,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1268347716, now seen corresponding path program 1 times [2020-10-28 09:32:49,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:32:49,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [547249878] [2020-10-28 09:32:49,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:32:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:49,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:49,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:49,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:49,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:50,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:51,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:51,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-28 09:32:51,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 09:32:51,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1770 [2020-10-28 09:32:51,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:51,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:51,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:32:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:32:51,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 09:32:51,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:51,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:32:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:51,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:51,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:51,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:32:51,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:51,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:32:51,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:51,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:32:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:51,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:32:51,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:51,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-28 09:32:51,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:51,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:51,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:51,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:32:51,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:51,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:32:51,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:51,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:32:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:51,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:32:51,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:51,639 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 09:32:51,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [547249878] [2020-10-28 09:32:51,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:32:51,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:32:51,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292623106] [2020-10-28 09:32:51,641 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:32:51,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:32:51,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:32:51,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:32:51,642 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 13 states. [2020-10-28 09:32:52,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:32:52,308 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-10-28 09:32:52,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:32:52,309 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-28 09:32:52,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:32:52,312 INFO L225 Difference]: With dead ends: 65 [2020-10-28 09:32:52,312 INFO L226 Difference]: Without dead ends: 38 [2020-10-28 09:32:52,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:32:52,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-28 09:32:52,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-28 09:32:52,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 09:32:52,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-28 09:32:52,321 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 31 [2020-10-28 09:32:52,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:32:52,321 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-28 09:32:52,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:32:52,322 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-28 09:32:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 09:32:52,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:32:52,323 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:32:52,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 09:32:52,323 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:32:52,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:32:52,324 INFO L82 PathProgramCache]: Analyzing trace with hash -108368151, now seen corresponding path program 2 times [2020-10-28 09:32:52,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:32:52,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [361644937] [2020-10-28 09:32:52,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:32:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:52,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:52,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:52,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:52,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:53,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:53,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 09:32:53,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 09:32:53,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1425 [2020-10-28 09:32:53,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:53,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:53,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 09:32:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 09:32:53,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-28 09:32:53,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:53,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:32:53,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:53,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:53,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:53,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:32:53,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:53,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:32:53,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:53,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:32:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:53,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:32:53,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:53,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 09:32:53,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:53,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:53,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:53,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:32:53,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:53,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:32:53,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:53,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:32:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:53,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:32:53,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:53,952 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-28 09:32:53,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [361644937] [2020-10-28 09:32:53,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:32:53,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 09:32:53,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979761184] [2020-10-28 09:32:53,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 09:32:53,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:32:53,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 09:32:53,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:32:53,955 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 13 states. [2020-10-28 09:32:54,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:32:54,470 INFO L93 Difference]: Finished difference Result 52 states and 55 transitions. [2020-10-28 09:32:54,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:32:54,471 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 35 [2020-10-28 09:32:54,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:32:54,472 INFO L225 Difference]: With dead ends: 52 [2020-10-28 09:32:54,472 INFO L226 Difference]: Without dead ends: 49 [2020-10-28 09:32:54,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=109, Invalid=443, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:32:54,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-28 09:32:54,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 46. [2020-10-28 09:32:54,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-28 09:32:54,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-28 09:32:54,483 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 35 [2020-10-28 09:32:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:32:54,484 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-28 09:32:54,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 09:32:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-28 09:32:54,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-28 09:32:54,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:32:54,486 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:32:54,486 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 09:32:54,486 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:32:54,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:32:54,487 INFO L82 PathProgramCache]: Analyzing trace with hash -238290286, now seen corresponding path program 3 times [2020-10-28 09:32:54,487 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:32:54,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905738070] [2020-10-28 09:32:54,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:32:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:54,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:54,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:55,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:55,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 09:32:55,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:32:55,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1211 [2020-10-28 09:32:55,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:55,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:32:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:32:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:32:55,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:55,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:32:55,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:55,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:55,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:55,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:32:55,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:55,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:32:55,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:55,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:55,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:32:55,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:55,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:32:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:55,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 09:32:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:55,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:55,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:55,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:32:55,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:55,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:32:55,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:55,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:55,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:32:55,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:55,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:32:55,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:55,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 09:32:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:55,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:55,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:55,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:32:55,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:55,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:32:55,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:55,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:32:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:55,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:32:55,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:55,988 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 09:32:55,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905738070] [2020-10-28 09:32:55,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:32:55,989 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:32:55,989 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488008006] [2020-10-28 09:32:55,990 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:32:55,990 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:32:55,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:32:55,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:32:55,991 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 14 states. [2020-10-28 09:32:57,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:32:57,001 INFO L93 Difference]: Finished difference Result 62 states and 65 transitions. [2020-10-28 09:32:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:32:57,006 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-10-28 09:32:57,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:32:57,008 INFO L225 Difference]: With dead ends: 62 [2020-10-28 09:32:57,008 INFO L226 Difference]: Without dead ends: 59 [2020-10-28 09:32:57,009 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=152, Invalid=718, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:32:57,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-28 09:32:57,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 54. [2020-10-28 09:32:57,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-28 09:32:57,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-10-28 09:32:57,019 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 43 [2020-10-28 09:32:57,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:32:57,019 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-10-28 09:32:57,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:32:57,019 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-10-28 09:32:57,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-28 09:32:57,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:32:57,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:32:57,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 09:32:57,021 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:32:57,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:32:57,022 INFO L82 PathProgramCache]: Analyzing trace with hash 578800955, now seen corresponding path program 4 times [2020-10-28 09:32:57,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:32:57,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177124940] [2020-10-28 09:32:57,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:32:57,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:57,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:57,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:57,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:57,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 09:32:57,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:32:57,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-28 09:32:57,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:57,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 09:32:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:32:57,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-28 09:32:57,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:57,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:32:57,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:57,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:57,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:57,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:32:57,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:57,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:32:57,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:57,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:57,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:32:57,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:57,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:32:57,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:57,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-28 09:32:57,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:57,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:57,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:57,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:32:57,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:32:57,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:57,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:57,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:32:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:57,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:32:57,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:57,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 09:32:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:57,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:57,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:57,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:32:57,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:57,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:32:57,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:57,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:32:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:57,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:32:57,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:57,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:32:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:57,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:57,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:57,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:32:57,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:57,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:32:57,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:57,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:57,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:32:57,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:57,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:32:57,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:57,731 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 24 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 09:32:57,731 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177124940] [2020-10-28 09:32:57,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:32:57,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 09:32:57,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698896552] [2020-10-28 09:32:57,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 09:32:57,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:32:57,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 09:32:57,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 09:32:57,733 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand 8 states. [2020-10-28 09:32:58,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:32:58,021 INFO L93 Difference]: Finished difference Result 104 states and 109 transitions. [2020-10-28 09:32:58,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 09:32:58,022 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-10-28 09:32:58,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:32:58,023 INFO L225 Difference]: With dead ends: 104 [2020-10-28 09:32:58,024 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 09:32:58,025 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 09:32:58,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 09:32:58,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-28 09:32:58,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-28 09:32:58,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2020-10-28 09:32:58,034 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 51 [2020-10-28 09:32:58,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:32:58,035 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2020-10-28 09:32:58,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 09:32:58,035 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2020-10-28 09:32:58,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 09:32:58,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:32:58,036 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:32:58,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 09:32:58,037 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:32:58,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:32:58,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1883536288, now seen corresponding path program 5 times [2020-10-28 09:32:58,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:32:58,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691927768] [2020-10-28 09:32:58,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:32:58,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:58,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:58,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:59,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:59,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 09:32:59,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:32:59,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1415 [2020-10-28 09:32:59,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:59,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:59,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:32:59,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:32:59,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-28 09:32:59,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:59,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:32:59,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:59,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:59,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:59,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:32:59,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:59,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:32:59,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:59,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:32:59,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:59,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:32:59,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:59,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 09:32:59,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:59,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:59,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:59,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:32:59,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:59,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:32:59,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:59,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:32:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:59,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:32:59,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:59,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:32:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:59,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:59,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:59,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:32:59,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:59,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:32:59,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:59,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:32:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:59,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:32:59,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:59,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:32:59,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:32:59,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:32:59,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:32:59,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:32:59,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:32:59,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:32:59,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:32:59,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:32:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:32:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:32:59,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:32:59,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:32:59,896 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-28 09:32:59,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691927768] [2020-10-28 09:32:59,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:32:59,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:32:59,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800579867] [2020-10-28 09:32:59,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:32:59,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:32:59,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:32:59,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:32:59,905 INFO L87 Difference]: Start difference. First operand 58 states and 60 transitions. Second operand 15 states. [2020-10-28 09:33:01,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:01,225 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2020-10-28 09:33:01,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:33:01,226 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-28 09:33:01,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:01,227 INFO L225 Difference]: With dead ends: 74 [2020-10-28 09:33:01,227 INFO L226 Difference]: Without dead ends: 71 [2020-10-28 09:33:01,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=204, Invalid=986, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:33:01,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-28 09:33:01,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 66. [2020-10-28 09:33:01,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-28 09:33:01,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 68 transitions. [2020-10-28 09:33:01,239 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 68 transitions. Word has length 55 [2020-10-28 09:33:01,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:01,239 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 68 transitions. [2020-10-28 09:33:01,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:33:01,239 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 68 transitions. [2020-10-28 09:33:01,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-28 09:33:01,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:01,241 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:01,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 09:33:01,241 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:01,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:01,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1340582153, now seen corresponding path program 6 times [2020-10-28 09:33:01,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:01,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692635019] [2020-10-28 09:33:01,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:01,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:01,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:01,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:02,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:02,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 09:33:02,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:02,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-28 09:33:02,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:02,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:02,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 09:33:02,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:33:02,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-28 09:33:02,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:02,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:02,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:02,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:02,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:33:02,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:02,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:02,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:02,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 09:33:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:02,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:02,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:02,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:02,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:02,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:02,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:02,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:02,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:02,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:02,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:02,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:33:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:02,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:02,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:02,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:02,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:02,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:02,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:02,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:02,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:02,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:33:02,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:02,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:02,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:02,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:02,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:02,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:02,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:02,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:02,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:02,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:33:02,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:02,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:02,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:02,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:02,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:02,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:02,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:02,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:02,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:02,188 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 40 proven. 28 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 09:33:02,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692635019] [2020-10-28 09:33:02,189 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:02,189 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 09:33:02,189 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063424268] [2020-10-28 09:33:02,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 09:33:02,190 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:02,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 09:33:02,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 09:33:02,190 INFO L87 Difference]: Start difference. First operand 66 states and 68 transitions. Second operand 9 states. [2020-10-28 09:33:02,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:02,552 INFO L93 Difference]: Finished difference Result 124 states and 129 transitions. [2020-10-28 09:33:02,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 09:33:02,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 63 [2020-10-28 09:33:02,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:02,554 INFO L225 Difference]: With dead ends: 124 [2020-10-28 09:33:02,554 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 09:33:02,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:33:02,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 09:33:02,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2020-10-28 09:33:02,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-28 09:33:02,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 72 transitions. [2020-10-28 09:33:02,566 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 72 transitions. Word has length 63 [2020-10-28 09:33:02,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:02,566 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 72 transitions. [2020-10-28 09:33:02,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 09:33:02,566 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 72 transitions. [2020-10-28 09:33:02,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-28 09:33:02,567 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:02,568 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:02,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 09:33:02,568 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:02,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:02,569 INFO L82 PathProgramCache]: Analyzing trace with hash -549924690, now seen corresponding path program 7 times [2020-10-28 09:33:02,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:02,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1036612545] [2020-10-28 09:33:02,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:02,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:02,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:05,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:05,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 09:33:05,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:05,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2574 [2020-10-28 09:33:05,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:05,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:05,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:33:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:33:05,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 09:33:05,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:05,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:05,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:05,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:05,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:05,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:05,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:05,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 09:33:05,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:05,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:05,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:05,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:05,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 09:33:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:05,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:05,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:05,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:05,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:05,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:05,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:05,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:05,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:05,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:05,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:33:05,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:05,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:05,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:05,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:05,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:05,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:33:05,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:05,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:05,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:05,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:05,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:33:05,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:05,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:05,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:05,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:05,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:05,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:05,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:05,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:05,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:05,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:05,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:33:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:05,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:05,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:05,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:05,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:05,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:33:05,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:05,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:05,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:05,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:05,702 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 21 proven. 64 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-28 09:33:05,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1036612545] [2020-10-28 09:33:05,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:05,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:33:05,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980958993] [2020-10-28 09:33:05,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:33:05,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:05,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:33:05,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:33:05,705 INFO L87 Difference]: Start difference. First operand 70 states and 72 transitions. Second operand 16 states. [2020-10-28 09:33:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:07,307 INFO L93 Difference]: Finished difference Result 84 states and 87 transitions. [2020-10-28 09:33:07,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 09:33:07,307 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 67 [2020-10-28 09:33:07,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:07,309 INFO L225 Difference]: With dead ends: 84 [2020-10-28 09:33:07,309 INFO L226 Difference]: Without dead ends: 81 [2020-10-28 09:33:07,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 15 SyntacticMatches, 9 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=275, Invalid=1285, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 09:33:07,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-28 09:33:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 78. [2020-10-28 09:33:07,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-28 09:33:07,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 80 transitions. [2020-10-28 09:33:07,322 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 80 transitions. Word has length 67 [2020-10-28 09:33:07,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:07,322 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 80 transitions. [2020-10-28 09:33:07,323 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:33:07,323 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 80 transitions. [2020-10-28 09:33:07,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-28 09:33:07,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:07,324 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:07,324 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 09:33:07,324 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:07,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:07,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1345505111, now seen corresponding path program 8 times [2020-10-28 09:33:07,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:07,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255436319] [2020-10-28 09:33:07,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:07,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:07,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:07,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:08,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:08,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-28 09:33:08,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:08,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-10-28 09:33:08,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:08,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:08,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:33:08,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:33:08,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 09:33:08,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:08,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:08,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:08,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:08,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:08,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:08,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:08,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:33:08,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:08,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:08,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:08,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:08,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 09:33:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:08,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:08,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:08,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:08,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:08,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:08,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:08,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:08,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:08,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:08,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:08,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:08,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:33:08,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:08,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:08,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:08,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:08,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:08,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:08,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:08,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:08,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:08,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:33:08,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:08,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:08,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:08,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:08,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:08,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:33:08,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:08,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:08,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:08,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:08,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:33:08,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:08,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:08,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:08,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:08,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:08,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:08,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:08,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:08,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:08,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:08,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:33:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:08,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:08,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:08,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:33:08,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:08,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:08,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:08,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:08,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:08,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 43 proven. 62 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 09:33:08,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255436319] [2020-10-28 09:33:08,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:08,726 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:33:08,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010190805] [2020-10-28 09:33:08,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:33:08,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:08,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:33:08,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:33:08,729 INFO L87 Difference]: Start difference. First operand 78 states and 80 transitions. Second operand 12 states. [2020-10-28 09:33:09,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:09,236 INFO L93 Difference]: Finished difference Result 150 states and 156 transitions. [2020-10-28 09:33:09,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:33:09,237 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 75 [2020-10-28 09:33:09,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:09,238 INFO L225 Difference]: With dead ends: 150 [2020-10-28 09:33:09,238 INFO L226 Difference]: Without dead ends: 90 [2020-10-28 09:33:09,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=259, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:33:09,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-28 09:33:09,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 82. [2020-10-28 09:33:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-28 09:33:09,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 84 transitions. [2020-10-28 09:33:09,250 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 84 transitions. Word has length 75 [2020-10-28 09:33:09,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:09,251 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 84 transitions. [2020-10-28 09:33:09,251 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:33:09,251 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 84 transitions. [2020-10-28 09:33:09,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 09:33:09,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:09,254 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:09,254 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 09:33:09,254 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:09,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:09,255 INFO L82 PathProgramCache]: Analyzing trace with hash 510959484, now seen corresponding path program 9 times [2020-10-28 09:33:09,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:09,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188681923] [2020-10-28 09:33:09,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:09,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:09,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:12,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:12,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 09:33:12,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:12,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2752 [2020-10-28 09:33:12,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:12,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:12,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:33:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:33:12,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 09:33:12,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:12,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:12,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:12,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:12,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:12,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:12,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:33:12,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:12,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:12,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:12,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:12,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:33:12,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:12,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:12,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:12,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:12,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:33:12,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:12,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:12,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:12,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:12,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:33:12,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:12,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:12,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:12,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:12,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:12,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 09:33:12,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:12,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:12,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:12,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:12,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:33:12,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:12,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:12,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:12,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:12,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:12,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:12,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:12,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:12,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:12,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:33:12,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:12,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:12,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:12,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:12,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:12,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:12,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:12,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:12,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:33:12,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:12,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:12,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:12,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:12,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:12,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:12,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:12,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:12,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:12,676 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 26 proven. 100 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 09:33:12,677 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188681923] [2020-10-28 09:33:12,677 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:12,677 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:33:12,677 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231518443] [2020-10-28 09:33:12,679 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:33:12,679 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:12,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:33:12,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:33:12,680 INFO L87 Difference]: Start difference. First operand 82 states and 84 transitions. Second operand 17 states. [2020-10-28 09:33:15,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:15,000 INFO L93 Difference]: Finished difference Result 98 states and 101 transitions. [2020-10-28 09:33:15,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:33:15,001 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 79 [2020-10-28 09:33:15,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:15,003 INFO L225 Difference]: With dead ends: 98 [2020-10-28 09:33:15,003 INFO L226 Difference]: Without dead ends: 95 [2020-10-28 09:33:15,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 18 SyntacticMatches, 11 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=340, Invalid=1730, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 09:33:15,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-28 09:33:15,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2020-10-28 09:33:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-28 09:33:15,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 92 transitions. [2020-10-28 09:33:15,018 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 92 transitions. Word has length 79 [2020-10-28 09:33:15,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:15,018 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 92 transitions. [2020-10-28 09:33:15,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:33:15,018 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 92 transitions. [2020-10-28 09:33:15,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 09:33:15,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:15,019 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:15,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 09:33:15,020 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:15,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:15,020 INFO L82 PathProgramCache]: Analyzing trace with hash -2066618331, now seen corresponding path program 10 times [2020-10-28 09:33:15,021 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:15,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608984779] [2020-10-28 09:33:15,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:15,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:15,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:16,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:16,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-28 09:33:16,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:16,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1323 [2020-10-28 09:33:16,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:16,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:16,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:33:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:33:16,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 09:33:16,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:16,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:16,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:16,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:16,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:16,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:16,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:16,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:16,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:16,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:16,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:16,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 09:33:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:16,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:16,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:16,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:16,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:16,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:16,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:16,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:33:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:16,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:16,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:16,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:16,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:16,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:16,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:16,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:16,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:16,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:33:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:16,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:16,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:16,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:16,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:16,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:16,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:16,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:16,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:16,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:16,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:33:16,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:16,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:16,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:16,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:16,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:16,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:16,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:16,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:16,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:16,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:16,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:16,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:33:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:16,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:16,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:16,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:16,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:16,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:16,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:16,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:16,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:16,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:16,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:16,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:33:16,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:33:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:16,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:16,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:16,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:16,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:16,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:16,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:16,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:16,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:16,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:16,597 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 84 proven. 66 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 09:33:16,597 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608984779] [2020-10-28 09:33:16,597 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:16,597 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 09:33:16,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416126121] [2020-10-28 09:33:16,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 09:33:16,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:16,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 09:33:16,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-28 09:33:16,599 INFO L87 Difference]: Start difference. First operand 90 states and 92 transitions. Second operand 12 states. [2020-10-28 09:33:17,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:17,144 INFO L93 Difference]: Finished difference Result 170 states and 176 transitions. [2020-10-28 09:33:17,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:33:17,145 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-10-28 09:33:17,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:17,146 INFO L225 Difference]: With dead ends: 170 [2020-10-28 09:33:17,146 INFO L226 Difference]: Without dead ends: 102 [2020-10-28 09:33:17,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:33:17,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-28 09:33:17,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 94. [2020-10-28 09:33:17,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-28 09:33:17,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 96 transitions. [2020-10-28 09:33:17,164 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 96 transitions. Word has length 87 [2020-10-28 09:33:17,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:17,165 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 96 transitions. [2020-10-28 09:33:17,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 09:33:17,165 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 96 transitions. [2020-10-28 09:33:17,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-28 09:33:17,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:17,166 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:17,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 09:33:17,166 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:17,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:17,167 INFO L82 PathProgramCache]: Analyzing trace with hash -20278, now seen corresponding path program 11 times [2020-10-28 09:33:17,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:17,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548029880] [2020-10-28 09:33:17,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:17,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:17,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:17,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:20,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:20,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 09:33:20,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:20,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3028 [2020-10-28 09:33:20,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:20,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 09:33:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:33:20,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 09:33:20,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:20,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:20,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:20,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:20,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:20,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:20,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:20,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:20,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:20,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:20,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:20,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:33:20,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:20,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:20,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:20,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:20,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:20,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:20,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:20,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:20,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:20,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:20,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:20,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:20,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:33:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:20,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:20,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:20,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:20,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:20,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:20,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:20,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:20,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:20,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:33:20,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:20,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:20,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:20,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:20,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:20,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:20,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:20,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:20,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:20,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:20,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:20,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:20,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:33:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:20,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:20,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:20,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:20,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:20,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:20,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:20,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:20,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:20,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:33:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:20,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:20,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:20,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:20,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:20,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:20,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:20,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:20,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:20,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:33:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:20,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:20,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:20,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:20,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:20,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:20,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:20,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:20,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:20,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:21,026 INFO L134 CoverageAnalysis]: Checked inductivity of 235 backedges. 31 proven. 144 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 09:33:21,027 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548029880] [2020-10-28 09:33:21,027 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:21,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:33:21,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787701633] [2020-10-28 09:33:21,028 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:33:21,028 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:21,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:33:21,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:33:21,029 INFO L87 Difference]: Start difference. First operand 94 states and 96 transitions. Second operand 18 states. [2020-10-28 09:33:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:23,966 INFO L93 Difference]: Finished difference Result 110 states and 113 transitions. [2020-10-28 09:33:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-28 09:33:23,967 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 91 [2020-10-28 09:33:23,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:23,969 INFO L225 Difference]: With dead ends: 110 [2020-10-28 09:33:23,970 INFO L226 Difference]: Without dead ends: 107 [2020-10-28 09:33:23,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 22 SyntacticMatches, 15 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=458, Invalid=2092, Unknown=0, NotChecked=0, Total=2550 [2020-10-28 09:33:23,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-28 09:33:23,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 102. [2020-10-28 09:33:23,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-28 09:33:24,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 104 transitions. [2020-10-28 09:33:24,004 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 104 transitions. Word has length 91 [2020-10-28 09:33:24,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:24,005 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 104 transitions. [2020-10-28 09:33:24,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:33:24,005 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 104 transitions. [2020-10-28 09:33:24,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 09:33:24,006 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:24,009 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:24,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 09:33:24,010 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:24,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:24,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1670761331, now seen corresponding path program 12 times [2020-10-28 09:33:24,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:24,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478563977] [2020-10-28 09:33:24,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:24,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:24,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:25,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:25,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 09:33:25,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:25,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1610 [2020-10-28 09:33:25,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:25,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:33:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:33:25,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 09:33:25,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:25,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:25,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:25,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:25,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:25,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:25,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:25,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:25,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:25,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:25,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:25,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:25,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:25,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:25,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 09:33:25,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:25,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:25,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:25,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:25,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:25,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:25,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:25,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:25,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:25,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:25,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:25,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:33:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:25,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:25,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:25,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:25,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:25,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:25,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:25,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:25,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:25,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:25,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:33:25,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:25,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:25,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:25,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:25,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:25,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:25,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:25,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:25,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:25,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:25,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:33:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:25,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:25,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:25,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:25,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:25,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:25,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:25,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:25,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:25,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:25,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:25,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:33:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:25,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:25,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:25,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:25,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:25,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:25,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:25,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:25,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:25,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:25,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:33:25,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:25,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:25,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:25,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:25,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:25,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:25,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:25,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:25,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:25,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:25,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:25,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:33:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:25,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:25,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:25,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:25,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:25,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:25,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:25,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:25,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:25,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:25,896 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 87 proven. 116 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 09:33:25,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478563977] [2020-10-28 09:33:25,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:25,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 09:33:25,897 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212174723] [2020-10-28 09:33:25,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 09:33:25,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:25,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 09:33:25,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-10-28 09:33:25,899 INFO L87 Difference]: Start difference. First operand 102 states and 104 transitions. Second operand 14 states. [2020-10-28 09:33:26,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:26,487 INFO L93 Difference]: Finished difference Result 190 states and 196 transitions. [2020-10-28 09:33:26,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-28 09:33:26,488 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 99 [2020-10-28 09:33:26,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:26,491 INFO L225 Difference]: With dead ends: 190 [2020-10-28 09:33:26,491 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 09:33:26,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=178, Invalid=374, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:33:26,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 09:33:26,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 106. [2020-10-28 09:33:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-28 09:33:26,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 108 transitions. [2020-10-28 09:33:26,506 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 108 transitions. Word has length 99 [2020-10-28 09:33:26,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:26,506 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 108 transitions. [2020-10-28 09:33:26,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 09:33:26,506 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 108 transitions. [2020-10-28 09:33:26,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-28 09:33:26,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:26,510 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:26,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 09:33:26,511 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:26,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1697987432, now seen corresponding path program 13 times [2020-10-28 09:33:26,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:26,512 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125884671] [2020-10-28 09:33:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:26,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:26,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:27,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:30,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3521 [2020-10-28 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 09:33:30,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:30,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:30,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:30,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:30,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:30,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:30,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:30,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:30,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:30,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:30,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:30,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:30,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:30,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:30,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:33:30,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:30,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:30,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:30,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:30,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:30,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:30,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:30,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:30,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:30,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:30,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:33:30,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:30,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:30,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:30,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:30,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:30,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:30,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:30,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:30,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:30,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:30,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:30,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:33:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:30,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:30,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:30,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:30,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:30,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:30,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:30,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:30,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:30,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:33:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:30,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:30,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:30,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:30,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:30,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:30,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:30,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:30,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:30,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:30,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:30,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:30,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:33:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:30,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:30,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:30,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:30,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:30,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:30,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:30,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:30,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:30,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:33:30,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:30,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:30,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:30,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:30,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:30,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:30,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:30,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:30,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:30,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:30,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:30,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:30,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:33:30,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:30,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:30,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:30,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:30,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:30,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:30,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:30,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:30,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:30,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:30,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:30,931 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 36 proven. 196 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-28 09:33:30,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125884671] [2020-10-28 09:33:30,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:30,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:33:30,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756386475] [2020-10-28 09:33:30,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:33:30,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:30,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:33:30,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:33:30,933 INFO L87 Difference]: Start difference. First operand 106 states and 108 transitions. Second operand 19 states. [2020-10-28 09:33:34,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:34,485 INFO L93 Difference]: Finished difference Result 122 states and 125 transitions. [2020-10-28 09:33:34,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-28 09:33:34,485 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 103 [2020-10-28 09:33:34,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:34,487 INFO L225 Difference]: With dead ends: 122 [2020-10-28 09:33:34,488 INFO L226 Difference]: Without dead ends: 119 [2020-10-28 09:33:34,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 24 SyntacticMatches, 17 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=507, Invalid=2573, Unknown=0, NotChecked=0, Total=3080 [2020-10-28 09:33:34,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-10-28 09:33:34,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 114. [2020-10-28 09:33:34,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-28 09:33:34,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 116 transitions. [2020-10-28 09:33:34,502 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 116 transitions. Word has length 103 [2020-10-28 09:33:34,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:34,502 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 116 transitions. [2020-10-28 09:33:34,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:33:34,502 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 116 transitions. [2020-10-28 09:33:34,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-28 09:33:34,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:34,504 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:34,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 09:33:34,504 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:34,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:34,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1722757441, now seen corresponding path program 14 times [2020-10-28 09:33:34,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:34,505 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025124064] [2020-10-28 09:33:34,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:34,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:36,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:36,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 09:33:36,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:36,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1600 [2020-10-28 09:33:36,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:36,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:36,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:33:36,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:33:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 09:33:36,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:36,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:36,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:36,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:36,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:36,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 09:33:36,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:36,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:36,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:36,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-28 09:33:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:36,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:36,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:36,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:36,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:36,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:36,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:36,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:36,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:36,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:36,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:33:36,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:33:36,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:36,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:36,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:36,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:36,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:36,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:36,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:36,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:36,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:36,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:36,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:33:36,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:33:36,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:36,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:36,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:36,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:36,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:36,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:36,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:36,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:36,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:36,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:33:36,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:33:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:36,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:36,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:36,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:36,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:36,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:36,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:36,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:36,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:36,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:36,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:36,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:36,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:33:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:36,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:36,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:36,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:36,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:36,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:36,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:36,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:36,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:33:36,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:33:36,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:36,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:36,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:36,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:36,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:36,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:36,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:36,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:36,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:36,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:33:36,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:33:36,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:36,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:36,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:36,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:36,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:36,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:36,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:36,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:36,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:33:36,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:33:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:36,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:36,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:36,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:36,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:36,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:36,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:36,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:36,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:36,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:33:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 115 proven. 149 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-28 09:33:36,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1025124064] [2020-10-28 09:33:36,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:36,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:33:36,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339542283] [2020-10-28 09:33:36,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:33:36,456 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:36,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:33:36,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:33:36,465 INFO L87 Difference]: Start difference. First operand 114 states and 116 transitions. Second operand 15 states. [2020-10-28 09:33:37,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:37,292 INFO L93 Difference]: Finished difference Result 210 states and 216 transitions. [2020-10-28 09:33:37,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-28 09:33:37,292 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 111 [2020-10-28 09:33:37,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:37,294 INFO L225 Difference]: With dead ends: 210 [2020-10-28 09:33:37,294 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 09:33:37,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=439, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:33:37,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 09:33:37,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 118. [2020-10-28 09:33:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-28 09:33:37,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 120 transitions. [2020-10-28 09:33:37,310 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 120 transitions. Word has length 111 [2020-10-28 09:33:37,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:37,310 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 120 transitions. [2020-10-28 09:33:37,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:33:37,310 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 120 transitions. [2020-10-28 09:33:37,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-28 09:33:37,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:37,312 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:37,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 09:33:37,312 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:37,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:37,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1512479462, now seen corresponding path program 15 times [2020-10-28 09:33:37,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:37,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996403048] [2020-10-28 09:33:37,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:37,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:37,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:37,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:41,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:41,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 09:33:41,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:41,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4050 [2020-10-28 09:33:41,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:41,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-28 09:33:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:33:41,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 09:33:41,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:42,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:42,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:42,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:42,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:42,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:42,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:42,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:42,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:42,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:42,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:42,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:42,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:33:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:42,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:42,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:42,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:42,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:42,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:42,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:42,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:42,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:42,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:42,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:33:42,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:42,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:42,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:42,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:42,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:42,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:42,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:42,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:42,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:42,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:42,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:42,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:42,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:33:42,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:42,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:42,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:42,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:42,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:42,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:33:42,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:42,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:42,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:42,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:42,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:42,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:33:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:42,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:42,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:42,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:42,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:42,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:42,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:42,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:42,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:42,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:33:42,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:42,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:42,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:42,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:42,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:42,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:42,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:42,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:42,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:42,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:42,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:42,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:42,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:33:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:42,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:42,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:42,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:42,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:42,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:33:42,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:42,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:42,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:42,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:42,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:42,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:33:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:42,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:42,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:42,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:42,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:42,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:42,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:42,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:42,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:42,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:42,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:42,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:33:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:42,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:42,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:42,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:42,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:42,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:42,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:42,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:42,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:42,395 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 41 proven. 256 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-28 09:33:42,395 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996403048] [2020-10-28 09:33:42,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:42,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:33:42,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393214718] [2020-10-28 09:33:42,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:33:42,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:42,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:33:42,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:33:42,399 INFO L87 Difference]: Start difference. First operand 118 states and 120 transitions. Second operand 20 states. [2020-10-28 09:33:44,929 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 66 [2020-10-28 09:33:46,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:46,582 INFO L93 Difference]: Finished difference Result 134 states and 137 transitions. [2020-10-28 09:33:46,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-10-28 09:33:46,582 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 115 [2020-10-28 09:33:46,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:46,585 INFO L225 Difference]: With dead ends: 134 [2020-10-28 09:33:46,585 INFO L226 Difference]: Without dead ends: 131 [2020-10-28 09:33:46,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 27 SyntacticMatches, 20 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 641 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=604, Invalid=3056, Unknown=0, NotChecked=0, Total=3660 [2020-10-28 09:33:46,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-28 09:33:46,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 126. [2020-10-28 09:33:46,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 09:33:46,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 128 transitions. [2020-10-28 09:33:46,609 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 128 transitions. Word has length 115 [2020-10-28 09:33:46,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:46,609 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 128 transitions. [2020-10-28 09:33:46,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:33:46,609 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 128 transitions. [2020-10-28 09:33:46,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-28 09:33:46,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:46,612 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:46,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 09:33:46,612 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:46,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:46,613 INFO L82 PathProgramCache]: Analyzing trace with hash -55649905, now seen corresponding path program 16 times [2020-10-28 09:33:46,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:46,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001071532] [2020-10-28 09:33:46,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:46,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:47,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:48,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:48,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 09:33:48,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2032 [2020-10-28 09:33:48,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:48,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:33:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:33:48,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 09:33:48,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:48,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:48,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:48,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:48,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:48,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:48,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:48,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:48,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:48,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:48,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 09:33:48,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:48,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:48,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:48,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:48,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:48,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:48,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:48,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:48,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:48,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:48,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:33:48,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:48,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:48,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:48,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:48,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:48,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:48,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:48,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:48,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:48,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:33:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:48,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:48,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:48,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:48,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:48,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:48,913 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:48,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:48,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:33:48,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:33:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:48,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:48,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:48,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:48,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:48,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:48,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:48,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:48,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:33:48,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:33:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:48,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:48,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:48,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:48,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:48,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:48,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:48,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:48,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:48,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:48,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:33:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:48,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:48,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:48,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:48,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:48,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:48,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:48,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:48,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:48,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:48,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:33:48,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:48,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:48,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:48,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:48,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:48,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:48,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:48,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:48,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:48,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:48,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:48,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:33:48,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:48,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:48,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:48,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:48,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:48,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:48,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:48,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:48,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:48,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:48,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:33:48,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:48,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:48,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:48,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:48,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:48,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:48,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:48,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:48,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:48,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:49,000 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 180 proven. 153 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-28 09:33:49,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001071532] [2020-10-28 09:33:49,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:49,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:33:49,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381541996] [2020-10-28 09:33:49,001 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:33:49,002 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:49,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:33:49,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:33:49,002 INFO L87 Difference]: Start difference. First operand 126 states and 128 transitions. Second operand 15 states. [2020-10-28 09:33:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:33:49,965 INFO L93 Difference]: Finished difference Result 230 states and 236 transitions. [2020-10-28 09:33:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:33:49,966 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 123 [2020-10-28 09:33:49,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:33:49,968 INFO L225 Difference]: With dead ends: 230 [2020-10-28 09:33:49,968 INFO L226 Difference]: Without dead ends: 138 [2020-10-28 09:33:49,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:33:49,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-28 09:33:49,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 130. [2020-10-28 09:33:49,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-28 09:33:49,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 132 transitions. [2020-10-28 09:33:49,983 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 132 transitions. Word has length 123 [2020-10-28 09:33:49,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:33:49,983 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 132 transitions. [2020-10-28 09:33:49,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:33:49,983 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 132 transitions. [2020-10-28 09:33:49,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-28 09:33:49,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:33:49,985 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:33:49,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 09:33:49,985 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:33:49,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:33:49,986 INFO L82 PathProgramCache]: Analyzing trace with hash -305925196, now seen corresponding path program 17 times [2020-10-28 09:33:49,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:33:49,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233305069] [2020-10-28 09:33:49,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:33:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:50,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:50,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:54,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:54,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-28 09:33:54,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:33:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4106 [2020-10-28 09:33:54,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:54,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-28 09:33:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:33:54,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-28 09:33:54,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:55,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:33:55,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:55,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:55,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:55,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:33:55,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:55,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:55,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:55,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:33:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:33:55,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:55,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:33:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:55,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:55,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:55,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:55,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:55,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:55,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:55,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:55,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:55,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:55,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:55,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:33:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:55,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:55,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:55,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:55,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:55,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:33:55,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:55,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:55,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:55,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:55,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:33:55,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:55,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:55,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:55,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:55,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:55,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:55,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:55,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:55,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:55,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:33:55,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:55,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:55,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:55,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:55,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:55,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:55,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:55,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:55,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:55,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:55,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:55,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:55,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:33:55,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:55,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:55,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:55,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:55,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:55,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:55,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:55,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:55,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:55,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:55,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:33:55,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:55,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:55,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:55,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:55,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:55,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:55,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:55,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:55,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:55,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:55,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:55,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:33:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:55,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:55,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:55,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:55,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:55,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:55,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:55,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:55,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:55,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:55,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:55,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:33:55,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:55,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:55,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:55,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:55,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:55,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:55,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:55,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:55,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:55,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:55,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:55,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:33:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:33:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:33:55,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:33:55,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:33:55,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:33:55,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:33:55,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:33:55,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:33:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:33:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:33:55,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:33:55,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:33:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 514 backedges. 46 proven. 324 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-28 09:33:55,409 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233305069] [2020-10-28 09:33:55,409 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:33:55,409 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:33:55,409 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962160771] [2020-10-28 09:33:55,410 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:33:55,410 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:33:55,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:33:55,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:33:55,411 INFO L87 Difference]: Start difference. First operand 130 states and 132 transitions. Second operand 21 states. [2020-10-28 09:33:58,196 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 69 [2020-10-28 09:33:58,570 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 72 [2020-10-28 09:34:00,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:34:00,458 INFO L93 Difference]: Finished difference Result 146 states and 149 transitions. [2020-10-28 09:34:00,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-28 09:34:00,459 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 127 [2020-10-28 09:34:00,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:34:00,461 INFO L225 Difference]: With dead ends: 146 [2020-10-28 09:34:00,461 INFO L226 Difference]: Without dead ends: 143 [2020-10-28 09:34:00,463 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 30 SyntacticMatches, 23 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=705, Invalid=3455, Unknown=0, NotChecked=0, Total=4160 [2020-10-28 09:34:00,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2020-10-28 09:34:00,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 138. [2020-10-28 09:34:00,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-28 09:34:00,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 140 transitions. [2020-10-28 09:34:00,476 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 140 transitions. Word has length 127 [2020-10-28 09:34:00,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:34:00,476 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 140 transitions. [2020-10-28 09:34:00,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:34:00,476 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 140 transitions. [2020-10-28 09:34:00,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 09:34:00,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:34:00,477 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:34:00,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 09:34:00,478 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:34:00,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:34:00,478 INFO L82 PathProgramCache]: Analyzing trace with hash 2022016093, now seen corresponding path program 18 times [2020-10-28 09:34:00,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:34:00,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731384822] [2020-10-28 09:34:00,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:34:00,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:00,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:00,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-28 09:34:02,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:34:02,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2028 [2020-10-28 09:34:02,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-28 09:34:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:34:02,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 09:34:02,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:02,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:34:02,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:34:02,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:02,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:02,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:34:02,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:02,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:34:02,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:02,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 09:34:02,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:02,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:02,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:02,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:02,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:02,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:02,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:34:02,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:34:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:02,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:02,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:02,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:02,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:02,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:02,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:02,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:34:02,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:02,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:02,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:02,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:02,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:02,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:02,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:34:02,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:02,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:02,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:02,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:02,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:02,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:02,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:02,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:34:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:02,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:02,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:02,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:02,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:02,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:02,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:02,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:34:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:02,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:02,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:02,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:02,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:02,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:02,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:02,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:34:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:02,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:02,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:02,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:02,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:02,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:02,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:34:02,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:02,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:02,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:02,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:02,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:34:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:02,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:02,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:02,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:02,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:02,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:02,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:02,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:34:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:02,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:02,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:02,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:02,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:02,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:02,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 220 proven. 190 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-28 09:34:02,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731384822] [2020-10-28 09:34:02,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:34:02,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:34:02,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961994656] [2020-10-28 09:34:02,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:34:02,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:34:02,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:34:02,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:34:02,888 INFO L87 Difference]: Start difference. First operand 138 states and 140 transitions. Second operand 15 states. [2020-10-28 09:34:03,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:34:03,922 INFO L93 Difference]: Finished difference Result 244 states and 249 transitions. [2020-10-28 09:34:03,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 09:34:03,926 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 135 [2020-10-28 09:34:03,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:34:03,927 INFO L225 Difference]: With dead ends: 244 [2020-10-28 09:34:03,928 INFO L226 Difference]: Without dead ends: 144 [2020-10-28 09:34:03,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=462, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:34:03,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-28 09:34:03,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 142. [2020-10-28 09:34:03,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-28 09:34:03,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 144 transitions. [2020-10-28 09:34:03,946 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 144 transitions. Word has length 135 [2020-10-28 09:34:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:34:03,947 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 144 transitions. [2020-10-28 09:34:03,947 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:34:03,947 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 144 transitions. [2020-10-28 09:34:03,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-28 09:34:03,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:34:03,949 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:34:03,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 09:34:03,950 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:34:03,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:34:03,950 INFO L82 PathProgramCache]: Analyzing trace with hash 968068866, now seen corresponding path program 19 times [2020-10-28 09:34:03,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:34:03,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1664641419] [2020-10-28 09:34:03,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:34:03,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:04,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:04,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:09,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:09,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 09:34:09,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:34:09,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 09:34:09,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:09,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:09,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-10-28 09:34:09,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:34:09,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 09:34:09,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:34:10,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:10,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:10,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:10,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:34:10,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:10,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:10,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:10,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:34:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:34:10,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:34:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:10,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:10,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:10,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:10,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:10,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:10,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:10,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:10,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:10,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:34:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:10,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:10,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:10,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:10,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:10,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:10,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:10,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:10,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:34:10,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:10,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:10,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:10,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:10,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:10,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:10,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:10,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:10,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:10,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:34:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:10,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:10,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:10,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:10,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:10,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:10,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:10,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:10,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:10,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:34:10,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:10,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:10,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:10,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:10,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:10,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:10,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:10,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:10,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:10,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:34:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:10,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:10,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:10,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:10,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:10,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:10,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:10,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:10,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:10,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:10,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:34:10,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:10,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:10,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:10,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:10,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:10,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:10,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:34:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:10,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:10,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:10,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:10,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:10,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:10,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:10,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:10,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:10,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:34:10,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:10,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:10,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:10,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:10,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:10,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:10,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:10,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:10,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:10,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:10,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:10,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-28 09:34:10,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:10,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:10,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:10,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:10,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:10,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:10,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:10,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:10,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:10,525 INFO L134 CoverageAnalysis]: Checked inductivity of 631 backedges. 51 proven. 400 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2020-10-28 09:34:10,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1664641419] [2020-10-28 09:34:10,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:34:10,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:34:10,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687477870] [2020-10-28 09:34:10,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:34:10,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:34:10,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:34:10,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:34:10,527 INFO L87 Difference]: Start difference. First operand 142 states and 144 transitions. Second operand 22 states. [2020-10-28 09:34:13,337 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2020-10-28 09:34:13,515 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2020-10-28 09:34:13,714 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2020-10-28 09:34:13,905 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 75 [2020-10-28 09:34:14,122 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 74 [2020-10-28 09:34:14,349 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 78 [2020-10-28 09:34:16,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:34:16,550 INFO L93 Difference]: Finished difference Result 158 states and 161 transitions. [2020-10-28 09:34:16,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2020-10-28 09:34:16,551 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 139 [2020-10-28 09:34:16,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:34:16,553 INFO L225 Difference]: With dead ends: 158 [2020-10-28 09:34:16,553 INFO L226 Difference]: Without dead ends: 155 [2020-10-28 09:34:16,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 33 SyntacticMatches, 26 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 885 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=825, Invalid=4145, Unknown=0, NotChecked=0, Total=4970 [2020-10-28 09:34:16,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-28 09:34:16,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 150. [2020-10-28 09:34:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-28 09:34:16,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 152 transitions. [2020-10-28 09:34:16,573 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 152 transitions. Word has length 139 [2020-10-28 09:34:16,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:34:16,574 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 152 transitions. [2020-10-28 09:34:16,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:34:16,574 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 152 transitions. [2020-10-28 09:34:16,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-28 09:34:16,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:34:16,577 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:34:16,577 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 09:34:16,577 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:34:16,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:34:16,578 INFO L82 PathProgramCache]: Analyzing trace with hash 25424299, now seen corresponding path program 20 times [2020-10-28 09:34:16,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:34:16,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [57210271] [2020-10-28 09:34:16,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:34:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:16,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:16,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-28 09:34:19,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:34:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2602 [2020-10-28 09:34:19,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:34:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:34:19,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 09:34:19,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:34:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:34:19,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:34:19,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:34:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:34:19,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 09:34:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:19,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:34:19,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:19,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:34:19,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:19,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:19,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:19,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:34:19,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:19,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:19,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:19,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:19,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:34:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:19,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:19,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:19,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:19,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:34:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:19,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:19,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:19,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:34:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:19,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:19,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:19,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:34:19,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:19,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:19,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:19,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:19,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:34:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:19,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:19,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:19,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:34:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:19,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:19,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:19,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-28 09:34:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:19,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 09:34:19,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:19,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:19,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 09:34:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:19,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:19,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:19,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:19,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:19,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 09:34:19,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:19,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:19,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:19,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:19,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 715 backedges. 264 proven. 231 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-28 09:34:19,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [57210271] [2020-10-28 09:34:19,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:34:19,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:34:19,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137327165] [2020-10-28 09:34:19,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:34:19,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:34:19,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:34:19,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:34:19,648 INFO L87 Difference]: Start difference. First operand 150 states and 152 transitions. Second operand 17 states. [2020-10-28 09:34:20,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:34:20,985 INFO L93 Difference]: Finished difference Result 270 states and 276 transitions. [2020-10-28 09:34:20,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 09:34:20,986 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 147 [2020-10-28 09:34:20,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:34:20,988 INFO L225 Difference]: With dead ends: 270 [2020-10-28 09:34:20,988 INFO L226 Difference]: Without dead ends: 162 [2020-10-28 09:34:20,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-28 09:34:20,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-28 09:34:21,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 154. [2020-10-28 09:34:21,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-28 09:34:21,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 156 transitions. [2020-10-28 09:34:21,005 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 156 transitions. Word has length 147 [2020-10-28 09:34:21,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:34:21,006 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 156 transitions. [2020-10-28 09:34:21,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:34:21,006 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 156 transitions. [2020-10-28 09:34:21,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-28 09:34:21,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:34:21,007 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:34:21,007 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 09:34:21,007 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:34:21,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:34:21,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1181101264, now seen corresponding path program 21 times [2020-10-28 09:34:21,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:34:21,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190083927] [2020-10-28 09:34:21,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:34:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:21,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:21,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:26,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:26,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 09:34:26,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:34:26,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 09:34:26,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:26,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 51 [2020-10-28 09:34:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:34:26,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 09:34:26,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:34:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:34:27,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:27,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:34:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:34:27,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:34:27,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:27,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:27,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:34:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:27,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:27,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:27,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:27,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:34:27,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:27,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:27,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:27,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:27,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:34:27,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:27,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:27,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:27,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:27,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:34:27,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:27,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:27,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:27,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:34:27,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:27,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:27,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:27,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:34:27,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:27,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:27,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:27,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:34:27,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:27,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:27,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:27,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:34:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:27,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:27,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:27,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:34:27,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:27,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:27,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:27,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-28 09:34:27,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:27,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:27,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:27,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:27,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:27,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:27,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:27,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:27,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:27,854 INFO L134 CoverageAnalysis]: Checked inductivity of 760 backedges. 56 proven. 484 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-28 09:34:27,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190083927] [2020-10-28 09:34:27,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:34:27,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-28 09:34:27,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [891229105] [2020-10-28 09:34:27,855 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-28 09:34:27,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:34:27,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-28 09:34:27,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-10-28 09:34:27,857 INFO L87 Difference]: Start difference. First operand 154 states and 156 transitions. Second operand 23 states. [2020-10-28 09:34:31,253 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2020-10-28 09:34:31,504 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 74 [2020-10-28 09:34:31,713 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-28 09:34:31,938 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 77 [2020-10-28 09:34:32,142 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2020-10-28 09:34:32,379 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-10-28 09:34:32,629 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 84 [2020-10-28 09:34:32,836 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-10-28 09:34:35,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:34:35,143 INFO L93 Difference]: Finished difference Result 170 states and 173 transitions. [2020-10-28 09:34:35,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2020-10-28 09:34:35,144 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 151 [2020-10-28 09:34:35,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:34:35,145 INFO L225 Difference]: With dead ends: 170 [2020-10-28 09:34:35,145 INFO L226 Difference]: Without dead ends: 167 [2020-10-28 09:34:35,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 37 SyntacticMatches, 30 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 951 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=1018, Invalid=4682, Unknown=0, NotChecked=0, Total=5700 [2020-10-28 09:34:35,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-28 09:34:35,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 162. [2020-10-28 09:34:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-10-28 09:34:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 164 transitions. [2020-10-28 09:34:35,163 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 164 transitions. Word has length 151 [2020-10-28 09:34:35,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:34:35,163 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 164 transitions. [2020-10-28 09:34:35,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-28 09:34:35,163 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 164 transitions. [2020-10-28 09:34:35,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 09:34:35,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:34:35,164 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:34:35,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 09:34:35,165 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:34:35,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:34:35,165 INFO L82 PathProgramCache]: Analyzing trace with hash -2091196039, now seen corresponding path program 22 times [2020-10-28 09:34:35,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:34:35,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631030534] [2020-10-28 09:34:35,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:34:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:35,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:35,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-28 09:34:39,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:34:39,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4249 [2020-10-28 09:34:39,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:34:39,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:34:39,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-28 09:34:39,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:34:39,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:34:39,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:39,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:34:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:34:39,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:34:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:39,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:34:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:34:39,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:34:39,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:34:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:39,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:34:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:39,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:34:39,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:39,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:34:39,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:39,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:34:39,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 09:34:39,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:34:39,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:39,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:34:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:39,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:34:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:39,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-28 09:34:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:39,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 09:34:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:39,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:39,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:39,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:39,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:34:39,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:39,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:39,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:39,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:39,900 INFO L134 CoverageAnalysis]: Checked inductivity of 852 backedges. 312 proven. 276 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-28 09:34:39,901 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631030534] [2020-10-28 09:34:39,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:34:39,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:34:39,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744962391] [2020-10-28 09:34:39,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:34:39,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:34:39,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:34:39,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:34:39,902 INFO L87 Difference]: Start difference. First operand 162 states and 164 transitions. Second operand 18 states. [2020-10-28 09:34:41,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:34:41,507 INFO L93 Difference]: Finished difference Result 290 states and 296 transitions. [2020-10-28 09:34:41,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-28 09:34:41,508 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 159 [2020-10-28 09:34:41,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:34:41,510 INFO L225 Difference]: With dead ends: 290 [2020-10-28 09:34:41,510 INFO L226 Difference]: Without dead ends: 174 [2020-10-28 09:34:41,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 09:34:41,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-28 09:34:41,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 166. [2020-10-28 09:34:41,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-28 09:34:41,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 168 transitions. [2020-10-28 09:34:41,538 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 168 transitions. Word has length 159 [2020-10-28 09:34:41,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:34:41,539 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 168 transitions. [2020-10-28 09:34:41,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:34:41,539 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 168 transitions. [2020-10-28 09:34:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 09:34:41,541 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:34:41,541 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:34:41,541 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 09:34:41,541 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:34:41,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:34:41,542 INFO L82 PathProgramCache]: Analyzing trace with hash 816614686, now seen corresponding path program 23 times [2020-10-28 09:34:41,542 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:34:41,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533754625] [2020-10-28 09:34:41,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:34:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:41,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:42,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:46,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:46,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-28 09:34:46,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:34:46,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 09:34:46,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:46,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:46,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 54 [2020-10-28 09:34:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:34:46,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-28 09:34:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:34:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:34:48,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:48,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:34:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:34:48,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:34:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:48,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:34:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:48,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:34:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:48,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:34:48,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:48,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:34:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:48,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:34:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:34:48,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:34:48,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:48,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:34:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:48,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-28 09:34:48,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:48,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 09:34:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:48,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-28 09:34:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:48,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-28 09:34:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:48,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:48,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:34:48,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:34:48,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:34:48,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:34:48,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:34:48,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:34:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:34:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:34:48,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:34:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:34:48,970 INFO L134 CoverageAnalysis]: Checked inductivity of 901 backedges. 61 proven. 576 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-10-28 09:34:48,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533754625] [2020-10-28 09:34:48,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:34:48,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:34:48,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404800412] [2020-10-28 09:34:48,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:34:48,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:34:48,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:34:48,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:34:48,973 INFO L87 Difference]: Start difference. First operand 166 states and 168 transitions. Second operand 24 states. [2020-10-28 09:34:53,479 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 83 [2020-10-28 09:34:54,281 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-10-28 09:34:54,707 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-10-28 09:34:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:34:57,702 INFO L93 Difference]: Finished difference Result 182 states and 185 transitions. [2020-10-28 09:34:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-10-28 09:34:57,703 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 163 [2020-10-28 09:34:57,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:34:57,706 INFO L225 Difference]: With dead ends: 182 [2020-10-28 09:34:57,706 INFO L226 Difference]: Without dead ends: 179 [2020-10-28 09:34:57,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 38 SyntacticMatches, 32 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1201 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1124, Invalid=5356, Unknown=0, NotChecked=0, Total=6480 [2020-10-28 09:34:57,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-28 09:34:57,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 174. [2020-10-28 09:34:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-28 09:34:57,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 176 transitions. [2020-10-28 09:34:57,725 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 176 transitions. Word has length 163 [2020-10-28 09:34:57,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:34:57,726 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 176 transitions. [2020-10-28 09:34:57,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:34:57,726 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 176 transitions. [2020-10-28 09:34:57,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 09:34:57,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:34:57,727 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 13, 13, 13, 13, 13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:34:57,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 09:34:57,727 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:34:57,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:34:57,728 INFO L82 PathProgramCache]: Analyzing trace with hash -1642392633, now seen corresponding path program 24 times [2020-10-28 09:34:57,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:34:57,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1275274116] [2020-10-28 09:34:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:34:57,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:34:57,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:34:58,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-10-28 09:35:02,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4734 [2020-10-28 09:35:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,486 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:35:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:35:02,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 09:35:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:02,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:02,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:02,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 09:35:02,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:02,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:02,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:02,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:35:02,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:02,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:02,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:02,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:35:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:02,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:02,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:02,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:35:02,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:02,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:02,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:02,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:02,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:35:02,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:02,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:02,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:02,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:35:02,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:02,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:02,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:02,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:02,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:35:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:02,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:02,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:02,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:35:02,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:02,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:02,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:02,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:02,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-28 09:35:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:02,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:02,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:02,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:02,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 09:35:02,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:02,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:02,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:02,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-28 09:35:02,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:02,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:02,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:02,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:02,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:02,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:02,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:02,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:02,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:02,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-28 09:35:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:03,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:03,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:03,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:03,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:03,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:03,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:03,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:03,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-28 09:35:03,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:03,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:03,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:03,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:03,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:03,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:03,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:03,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1001 backedges. 315 proven. 374 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-28 09:35:03,042 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1275274116] [2020-10-28 09:35:03,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:03,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:35:03,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020289239] [2020-10-28 09:35:03,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:35:03,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:03,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:35:03,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:35:03,044 INFO L87 Difference]: Start difference. First operand 174 states and 176 transitions. Second operand 20 states. [2020-10-28 09:35:04,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:04,971 INFO L93 Difference]: Finished difference Result 310 states and 316 transitions. [2020-10-28 09:35:04,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 09:35:04,973 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 171 [2020-10-28 09:35:04,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:04,975 INFO L225 Difference]: With dead ends: 310 [2020-10-28 09:35:04,975 INFO L226 Difference]: Without dead ends: 186 [2020-10-28 09:35:04,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=421, Invalid=839, Unknown=0, NotChecked=0, Total=1260 [2020-10-28 09:35:04,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-28 09:35:04,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 178. [2020-10-28 09:35:04,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 09:35:04,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 180 transitions. [2020-10-28 09:35:04,997 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 180 transitions. Word has length 171 [2020-10-28 09:35:04,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:04,998 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 180 transitions. [2020-10-28 09:35:04,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:35:04,998 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 180 transitions. [2020-10-28 09:35:04,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-28 09:35:04,999 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:05,000 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:05,000 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:35:05,000 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:05,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:05,001 INFO L82 PathProgramCache]: Analyzing trace with hash 431452140, now seen corresponding path program 25 times [2020-10-28 09:35:05,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:05,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298679189] [2020-10-28 09:35:05,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:05,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:06,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:10,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:10,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-28 09:35:10,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5062 [2020-10-28 09:35:10,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:10,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 58 [2020-10-28 09:35:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:35:10,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-28 09:35:10,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:12,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:12,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:35:12,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:35:12,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:35:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:35:12,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:35:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:35:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:35:12,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:35:12,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:35:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-28 09:35:12,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 09:35:12,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:12,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 09:35:12,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:12,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-28 09:35:12,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:12,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:12,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:12,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:12,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:12,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:12,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:12,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:12,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1054 backedges. 66 proven. 676 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2020-10-28 09:35:12,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298679189] [2020-10-28 09:35:12,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:12,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-28 09:35:12,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144547667] [2020-10-28 09:35:12,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-28 09:35:12,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:12,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-28 09:35:12,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-28 09:35:12,269 INFO L87 Difference]: Start difference. First operand 178 states and 180 transitions. Second operand 25 states. [2020-10-28 09:35:17,512 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-28 09:35:17,840 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 85 [2020-10-28 09:35:18,143 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-10-28 09:35:18,488 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 88 [2020-10-28 09:35:18,765 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 92 [2020-10-28 09:35:19,113 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 91 [2020-10-28 09:35:19,457 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 95 [2020-10-28 09:35:23,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:23,097 INFO L93 Difference]: Finished difference Result 194 states and 197 transitions. [2020-10-28 09:35:23,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2020-10-28 09:35:23,098 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 175 [2020-10-28 09:35:23,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:23,101 INFO L225 Difference]: With dead ends: 194 [2020-10-28 09:35:23,101 INFO L226 Difference]: Without dead ends: 191 [2020-10-28 09:35:23,104 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 42 SyntacticMatches, 35 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1266 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=1219, Invalid=5921, Unknown=0, NotChecked=0, Total=7140 [2020-10-28 09:35:23,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-10-28 09:35:23,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 186. [2020-10-28 09:35:23,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-28 09:35:23,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 188 transitions. [2020-10-28 09:35:23,123 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 188 transitions. Word has length 175 [2020-10-28 09:35:23,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:23,124 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 188 transitions. [2020-10-28 09:35:23,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-28 09:35:23,124 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 188 transitions. [2020-10-28 09:35:23,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-10-28 09:35:23,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:23,125 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 14, 14, 14, 14, 14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:23,126 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:35:23,126 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:23,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:23,126 INFO L82 PathProgramCache]: Analyzing trace with hash -1774892907, now seen corresponding path program 26 times [2020-10-28 09:35:23,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:23,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109415696] [2020-10-28 09:35:23,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:23,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:23,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:27,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:27,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-28 09:35:27,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:27,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4573 [2020-10-28 09:35:27,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:27,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-28 09:35:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:35:27,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-28 09:35:27,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:28,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:35:28,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:28,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:35:28,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:35:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:35:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:35:28,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:35:28,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:35:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:35:28,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:35:28,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:35:28,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-28 09:35:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 09:35:28,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 09:35:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-28 09:35:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-28 09:35:28,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:28,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:28,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:28,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:28,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:28,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:28,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:28,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:28,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:28,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1162 backedges. 420 proven. 378 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-28 09:35:28,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109415696] [2020-10-28 09:35:28,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:28,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:35:28,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739087410] [2020-10-28 09:35:28,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:35:28,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:28,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:35:28,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:35:28,293 INFO L87 Difference]: Start difference. First operand 186 states and 188 transitions. Second operand 19 states. [2020-10-28 09:35:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:30,304 INFO L93 Difference]: Finished difference Result 324 states and 329 transitions. [2020-10-28 09:35:30,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:35:30,306 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 183 [2020-10-28 09:35:30,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:30,311 INFO L225 Difference]: With dead ends: 324 [2020-10-28 09:35:30,311 INFO L226 Difference]: Without dead ends: 192 [2020-10-28 09:35:30,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=414, Invalid=776, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 09:35:30,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-28 09:35:30,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 190. [2020-10-28 09:35:30,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 190 states. [2020-10-28 09:35:30,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190 states to 190 states and 192 transitions. [2020-10-28 09:35:30,342 INFO L78 Accepts]: Start accepts. Automaton has 190 states and 192 transitions. Word has length 183 [2020-10-28 09:35:30,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:30,343 INFO L481 AbstractCegarLoop]: Abstraction has 190 states and 192 transitions. [2020-10-28 09:35:30,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:35:30,343 INFO L276 IsEmpty]: Start isEmpty. Operand 190 states and 192 transitions. [2020-10-28 09:35:30,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-28 09:35:30,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:30,344 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:30,344 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:35:30,345 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:30,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:30,345 INFO L82 PathProgramCache]: Analyzing trace with hash 387421498, now seen corresponding path program 27 times [2020-10-28 09:35:30,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:30,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031754865] [2020-10-28 09:35:30,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:30,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:32,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:35,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:35,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-10-28 09:35:35,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:35,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 09:35:35,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:35,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 62 [2020-10-28 09:35:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:35:35,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 09:35:35,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:37,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:37,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:37,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:37,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:37,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:35:37,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:37,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:37,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:35:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:37,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:37,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:37,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:37,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:37,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:37,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:37,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:37,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:37,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:37,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:37,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:35:37,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:37,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:37,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:37,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:37,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:37,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:37,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:37,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:37,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:37,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:37,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:35:37,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:35:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:37,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:37,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:37,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:37,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:37,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:37,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:37,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:37,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:37,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:37,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:37,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:35:37,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:37,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:37,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:37,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:37,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:37,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:37,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:37,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:37,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:35:37,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:37,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:37,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:37,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:37,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:37,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:37,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:37,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:37,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:35:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:37,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:37,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:37,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:37,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:37,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:37,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:37,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:37,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:37,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:35:37,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:37,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:37,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:37,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:37,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:37,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:37,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:37,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:37,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-28 09:35:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:37,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:37,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:37,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:37,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:37,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:37,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:37,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:37,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:37,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:37,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:38,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 09:35:38,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:38,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:38,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:38,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:38,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:38,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:38,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:38,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:38,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:38,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-28 09:35:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:38,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:38,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:38,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:38,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:38,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:38,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:38,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:38,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:38,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:38,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:38,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-28 09:35:38,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:38,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:38,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:38,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:38,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:38,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:38,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:38,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:38,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-28 09:35:38,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:38,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:38,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:38,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:38,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:38,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:38,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:38,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:38,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:38,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-28 09:35:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:38,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:38,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:38,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:38,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:38,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:38,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:38,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:38,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-28 09:35:38,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:38,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:38,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:38,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:38,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:38,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:38,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:38,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:38,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:38,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:38,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:38,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:38,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1219 backedges. 71 proven. 784 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2020-10-28 09:35:38,143 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031754865] [2020-10-28 09:35:38,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:38,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:35:38,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885229764] [2020-10-28 09:35:38,144 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:35:38,144 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:38,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:35:38,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=598, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:35:38,145 INFO L87 Difference]: Start difference. First operand 190 states and 192 transitions. Second operand 26 states. [2020-10-28 09:35:43,924 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 09:35:44,492 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-10-28 09:35:44,843 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 91 [2020-10-28 09:35:45,192 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 95 [2020-10-28 09:35:45,622 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 94 [2020-10-28 09:35:45,941 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 98 [2020-10-28 09:35:46,330 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-10-28 09:35:46,735 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 101 [2020-10-28 09:35:50,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:50,734 INFO L93 Difference]: Finished difference Result 206 states and 209 transitions. [2020-10-28 09:35:50,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2020-10-28 09:35:50,736 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 187 [2020-10-28 09:35:50,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:50,737 INFO L225 Difference]: With dead ends: 206 [2020-10-28 09:35:50,737 INFO L226 Difference]: Without dead ends: 203 [2020-10-28 09:35:50,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 45 SyntacticMatches, 38 SemanticMatches, 88 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1429 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=1370, Invalid=6640, Unknown=0, NotChecked=0, Total=8010 [2020-10-28 09:35:50,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-10-28 09:35:50,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 198. [2020-10-28 09:35:50,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-28 09:35:50,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 200 transitions. [2020-10-28 09:35:50,758 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 200 transitions. Word has length 187 [2020-10-28 09:35:50,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:50,759 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 200 transitions. [2020-10-28 09:35:50,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:35:50,759 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 200 transitions. [2020-10-28 09:35:50,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-28 09:35:50,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:50,760 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 15, 15, 15, 15, 15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:50,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:35:50,761 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:50,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:50,761 INFO L82 PathProgramCache]: Analyzing trace with hash 1148862435, now seen corresponding path program 28 times [2020-10-28 09:35:50,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:50,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339465581] [2020-10-28 09:35:50,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:50,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:50,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:51,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:54,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:54,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-28 09:35:54,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:35:54,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4084 [2020-10-28 09:35:54,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:54,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:54,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-28 09:35:54,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-28 09:35:54,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 214 [2020-10-28 09:35:54,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:35:55,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:35:55,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:55,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:35:55,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:35:55,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:35:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:55,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:35:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:35:55,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:35:55,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:35:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:35:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:35:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:35:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-28 09:35:55,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 09:35:55,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-28 09:35:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-28 09:35:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-28 09:35:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-28 09:35:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-28 09:35:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-28 09:35:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:55,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:55,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:35:55,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:35:55,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:35:55,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:35:55,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:35:55,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:35:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:35:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:35:55,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:35:55,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:35:55,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1335 backedges. 480 proven. 435 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-28 09:35:55,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339465581] [2020-10-28 09:35:55,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:35:55,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:35:55,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338427774] [2020-10-28 09:35:55,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:35:55,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:35:55,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:35:55,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:35:55,498 INFO L87 Difference]: Start difference. First operand 198 states and 200 transitions. Second operand 21 states. [2020-10-28 09:35:58,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:35:58,020 INFO L93 Difference]: Finished difference Result 350 states and 356 transitions. [2020-10-28 09:35:58,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-28 09:35:58,022 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 195 [2020-10-28 09:35:58,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:35:58,024 INFO L225 Difference]: With dead ends: 350 [2020-10-28 09:35:58,024 INFO L226 Difference]: Without dead ends: 210 [2020-10-28 09:35:58,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=519, Invalid=963, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 09:35:58,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-28 09:35:58,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 202. [2020-10-28 09:35:58,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-10-28 09:35:58,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 204 transitions. [2020-10-28 09:35:58,057 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 204 transitions. Word has length 195 [2020-10-28 09:35:58,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:35:58,057 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 204 transitions. [2020-10-28 09:35:58,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:35:58,057 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 204 transitions. [2020-10-28 09:35:58,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-28 09:35:58,059 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:35:58,059 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:35:58,060 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:35:58,060 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:35:58,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:35:58,060 INFO L82 PathProgramCache]: Analyzing trace with hash 582860040, now seen corresponding path program 29 times [2020-10-28 09:35:58,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:35:58,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235792204] [2020-10-28 09:35:58,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:35:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:35:58,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:35:59,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:03,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:03,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-28 09:36:03,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:36:03,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-28 09:36:03,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:03,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 67 [2020-10-28 09:36:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-28 09:36:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 09:36:03,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:36:06,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:36:06,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:36:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:36:06,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:36:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:36:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:36:06,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:36:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,066 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:36:06,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:36:06,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:36:06,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:36:06,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-28 09:36:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 09:36:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 09:36:06,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-28 09:36:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-28 09:36:06,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 09:36:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-28 09:36:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:36:06,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:36:06,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:36:06,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:36:06,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:36:06,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:36:06,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:36:06,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:36:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:36:06,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:36:06,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:36:06,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:36:06,263 INFO L134 CoverageAnalysis]: Checked inductivity of 1396 backedges. 76 proven. 900 refuted. 0 times theorem prover too weak. 420 trivial. 0 not checked. [2020-10-28 09:36:06,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235792204] [2020-10-28 09:36:06,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:36:06,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-28 09:36:06,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496980642] [2020-10-28 09:36:06,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-28 09:36:06,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:36:06,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-28 09:36:06,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=647, Unknown=0, NotChecked=0, Total=702 [2020-10-28 09:36:06,265 INFO L87 Difference]: Start difference. First operand 202 states and 204 transitions. Second operand 27 states. [2020-10-28 09:36:12,912 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-28 09:36:13,428 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-28 09:36:13,617 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-28 09:36:13,956 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 94 [2020-10-28 09:36:14,392 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 97 [2020-10-28 09:36:14,723 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2020-10-28 09:36:15,124 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 100 [2020-10-28 09:36:15,521 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 104 [2020-10-28 09:36:15,995 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 103 [2020-10-28 09:36:16,415 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 107 [2020-10-28 09:36:16,755 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 104