/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label58.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:29:00,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:29:00,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:29:00,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:29:00,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:29:00,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:29:00,985 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:29:00,988 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:29:00,990 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:29:00,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:29:00,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:29:00,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:29:00,994 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:29:00,996 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:29:00,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:29:00,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:29:01,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:29:01,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:29:01,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:29:01,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:29:01,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:29:01,011 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:29:01,012 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:29:01,014 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:29:01,017 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:29:01,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:29:01,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:29:01,032 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:29:01,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:29:01,034 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:29:01,034 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:29:01,035 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:29:01,036 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:29:01,037 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:29:01,039 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:29:01,039 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:29:01,040 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:29:01,040 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:29:01,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:29:01,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:29:01,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:29:01,044 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 13:29:01,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:29:01,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:29:01,074 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:29:01,074 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:29:01,075 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:29:01,075 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:29:01,076 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:29:01,076 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:29:01,076 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:29:01,077 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:29:01,077 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:29:01,077 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:29:01,078 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:29:01,078 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:29:01,078 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:29:01,079 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:29:01,079 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:29:01,079 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:29:01,079 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:29:01,080 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:29:01,080 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:29:01,080 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:29:01,081 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:29:01,081 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:29:01,081 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:29:01,082 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:29:01,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:29:01,082 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:29:01,082 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:29:01,083 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:29:01,565 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:29:01,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:29:01,617 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:29:01,619 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:29:01,619 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:29:01,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label58.c [2020-10-28 13:29:01,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1dd031c47/12e6cc3e5c15413fa84ff92a341cf4e9/FLAGc945cee3d [2020-10-28 13:29:02,650 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:29:02,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label58.c [2020-10-28 13:29:02,679 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1dd031c47/12e6cc3e5c15413fa84ff92a341cf4e9/FLAGc945cee3d [2020-10-28 13:29:02,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1dd031c47/12e6cc3e5c15413fa84ff92a341cf4e9 [2020-10-28 13:29:02,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:29:02,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:29:02,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:29:02,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:29:02,779 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:29:02,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:29:02" (1/1) ... [2020-10-28 13:29:02,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6372ebc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:02, skipping insertion in model container [2020-10-28 13:29:02,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:29:02" (1/1) ... [2020-10-28 13:29:02,796 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:29:02,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:29:03,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:29:03,808 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:29:04,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:29:04,075 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:29:04,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:04 WrapperNode [2020-10-28 13:29:04,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:29:04,078 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:29:04,078 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:29:04,078 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:29:04,091 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:04" (1/1) ... [2020-10-28 13:29:04,092 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:04" (1/1) ... [2020-10-28 13:29:04,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:04" (1/1) ... [2020-10-28 13:29:04,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:04" (1/1) ... [2020-10-28 13:29:04,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:04" (1/1) ... [2020-10-28 13:29:04,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:04" (1/1) ... [2020-10-28 13:29:04,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:04" (1/1) ... [2020-10-28 13:29:04,282 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:29:04,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:29:04,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:29:04,285 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:29:04,286 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:04" (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 13:29:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:29:04,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:29:04,367 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:29:04,367 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:29:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:29:04,368 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:29:04,368 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:29:04,369 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:29:04,369 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:29:04,369 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:29:04,370 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:29:04,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:29:04,371 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:29:04,371 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:29:04,371 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:29:04,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:29:04,372 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:29:04,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:29:04,373 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:29:04,373 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:29:04,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:29:06,960 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:29:06,961 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:29:06,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:29:06 BoogieIcfgContainer [2020-10-28 13:29:06,964 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:29:06,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:29:06,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:29:06,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:29:06,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:29:02" (1/3) ... [2020-10-28 13:29:06,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a900a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:29:06, skipping insertion in model container [2020-10-28 13:29:06,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:04" (2/3) ... [2020-10-28 13:29:06,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a900a30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:29:06, skipping insertion in model container [2020-10-28 13:29:06,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:29:06" (3/3) ... [2020-10-28 13:29:06,974 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label58.c [2020-10-28 13:29:06,988 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:29:06,994 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:29:07,008 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:29:07,039 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:29:07,039 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:29:07,039 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:29:07,039 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:29:07,039 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:29:07,039 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:29:07,040 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:29:07,040 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:29:07,068 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:29:07,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 13:29:07,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:07,078 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:07,079 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:07,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:07,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1788916732, now seen corresponding path program 1 times [2020-10-28 13:29:07,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:07,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458710572] [2020-10-28 13:29:07,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:07,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:07,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:07,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-28 13:29:07,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:07,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-28 13:29:07,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:07,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:29:07,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 13:29:07,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:29:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:07,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:08,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:08,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:08,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:08,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:29:08,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:08,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:08,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:29:08,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:08,043 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 13:29:08,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458710572] [2020-10-28 13:29:08,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:29:08,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:29:08,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998673480] [2020-10-28 13:29:08,053 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:29:08,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:08,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:29:08,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:29:08,072 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-28 13:29:12,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:12,908 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-28 13:29:12,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:29:12,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-28 13:29:12,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:12,932 INFO L225 Difference]: With dead ends: 1174 [2020-10-28 13:29:12,932 INFO L226 Difference]: Without dead ends: 697 [2020-10-28 13:29:12,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:29:12,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-28 13:29:13,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-28 13:29:13,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-28 13:29:13,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-28 13:29:13,062 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 58 [2020-10-28 13:29:13,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:13,063 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-28 13:29:13,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:29:13,064 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-28 13:29:13,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 13:29:13,070 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:13,071 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:13,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:29:13,071 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:13,072 INFO L82 PathProgramCache]: Analyzing trace with hash 917207516, now seen corresponding path program 1 times [2020-10-28 13:29:13,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:13,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1988704573] [2020-10-28 13:29:13,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:13,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:14,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:14,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 13:29:14,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:29:14,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1181 [2020-10-28 13:29:14,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:14,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:14,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:14,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:29:14,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:29:14,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:14,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:14,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:14,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:14,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:14,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:14,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:29:14,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:14,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:14,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:14,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:29:14,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:14,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:14,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:14,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:29:14,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:14,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 13:29:14,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:14,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:14,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:14,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:29:14,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:14,864 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:29:14,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1988704573] [2020-10-28 13:29:14,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:29:14,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:29:14,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078608887] [2020-10-28 13:29:14,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:14,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:14,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:14,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:14,875 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-28 13:29:20,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:20,297 INFO L93 Difference]: Finished difference Result 2090 states and 3102 transitions. [2020-10-28 13:29:20,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:29:20,300 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-28 13:29:20,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:20,312 INFO L225 Difference]: With dead ends: 2090 [2020-10-28 13:29:20,313 INFO L226 Difference]: Without dead ends: 1403 [2020-10-28 13:29:20,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:29:20,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1403 states. [2020-10-28 13:29:20,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1403 to 1379. [2020-10-28 13:29:20,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1379 states. [2020-10-28 13:29:20,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1379 states to 1379 states and 1813 transitions. [2020-10-28 13:29:20,410 INFO L78 Accepts]: Start accepts. Automaton has 1379 states and 1813 transitions. Word has length 134 [2020-10-28 13:29:20,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:20,411 INFO L481 AbstractCegarLoop]: Abstraction has 1379 states and 1813 transitions. [2020-10-28 13:29:20,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:20,411 INFO L276 IsEmpty]: Start isEmpty. Operand 1379 states and 1813 transitions. [2020-10-28 13:29:20,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-10-28 13:29:20,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:20,419 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:20,419 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:29:20,419 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:20,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:20,420 INFO L82 PathProgramCache]: Analyzing trace with hash -187954198, now seen corresponding path program 1 times [2020-10-28 13:29:20,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:20,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644566124] [2020-10-28 13:29:20,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:20,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:20,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:20,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:21,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:21,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:22,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:25,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:25,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-10-28 13:29:25,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:29:25,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4672 [2020-10-28 13:29:25,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:25,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:25,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:29:25,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:29:25,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:25,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:25,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:25,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:25,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:25,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:25,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:25,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:29:25,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:25,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:25,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:25,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:25,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:25,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:25,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:25,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:29:25,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:25,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:29:25,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:25,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:25,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:29:25,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:25,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:29:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:25,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:25,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:25,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:25,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 13:29:25,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:29:25,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:29:25,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:25,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:25,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:25,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:25,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:29:25,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:25,740 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 117 proven. 50 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:29:25,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644566124] [2020-10-28 13:29:25,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:25,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:29:25,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181649151] [2020-10-28 13:29:25,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:29:25,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:25,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:29:25,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:29:25,744 INFO L87 Difference]: Start difference. First operand 1379 states and 1813 transitions. Second operand 7 states. [2020-10-28 13:29:33,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:33,079 INFO L93 Difference]: Finished difference Result 4186 states and 5539 transitions. [2020-10-28 13:29:33,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:29:33,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 221 [2020-10-28 13:29:33,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:33,096 INFO L225 Difference]: With dead ends: 4186 [2020-10-28 13:29:33,096 INFO L226 Difference]: Without dead ends: 2813 [2020-10-28 13:29:33,100 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:29:33,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2813 states. [2020-10-28 13:29:33,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2813 to 2113. [2020-10-28 13:29:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2113 states. [2020-10-28 13:29:33,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2660 transitions. [2020-10-28 13:29:33,185 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2660 transitions. Word has length 221 [2020-10-28 13:29:33,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:33,186 INFO L481 AbstractCegarLoop]: Abstraction has 2113 states and 2660 transitions. [2020-10-28 13:29:33,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:29:33,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2660 transitions. [2020-10-28 13:29:33,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-10-28 13:29:33,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:33,193 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:33,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:29:33,194 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:33,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:33,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1815643450, now seen corresponding path program 1 times [2020-10-28 13:29:33,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:33,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095800445] [2020-10-28 13:29:33,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:33,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:33,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:37,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:37,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 301 [2020-10-28 13:29:37,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:29:37,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4250 [2020-10-28 13:29:37,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:37,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:29:37,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:29:37,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:37,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:37,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:37,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:37,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:37,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:37,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:29:37,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:37,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:37,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:37,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:37,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:37,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:37,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:37,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:37,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:37,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:29:37,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:37,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:29:37,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:37,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:29:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:37,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:29:37,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:37,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:38,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:38,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:29:38,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 195 [2020-10-28 13:29:38,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:38,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:38,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:29:38,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:29:38,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095800445] [2020-10-28 13:29:38,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:38,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:29:38,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383632162] [2020-10-28 13:29:38,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:29:38,448 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:38,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:29:38,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:29:38,449 INFO L87 Difference]: Start difference. First operand 2113 states and 2660 transitions. Second operand 8 states. [2020-10-28 13:29:38,593 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 13:29:47,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:47,588 INFO L93 Difference]: Finished difference Result 6338 states and 8408 transitions. [2020-10-28 13:29:47,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:29:47,589 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 287 [2020-10-28 13:29:47,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:47,616 INFO L225 Difference]: With dead ends: 6338 [2020-10-28 13:29:47,616 INFO L226 Difference]: Without dead ends: 4231 [2020-10-28 13:29:47,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:29:47,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2020-10-28 13:29:47,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 4212. [2020-10-28 13:29:47,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4212 states. [2020-10-28 13:29:47,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4212 states to 4212 states and 5156 transitions. [2020-10-28 13:29:47,760 INFO L78 Accepts]: Start accepts. Automaton has 4212 states and 5156 transitions. Word has length 287 [2020-10-28 13:29:47,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:29:47,761 INFO L481 AbstractCegarLoop]: Abstraction has 4212 states and 5156 transitions. [2020-10-28 13:29:47,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:29:47,761 INFO L276 IsEmpty]: Start isEmpty. Operand 4212 states and 5156 transitions. [2020-10-28 13:29:47,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-10-28 13:29:47,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:47,769 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:47,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:29:47,769 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:47,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:47,770 INFO L82 PathProgramCache]: Analyzing trace with hash 796815936, now seen corresponding path program 1 times [2020-10-28 13:29:47,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:47,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1163185073] [2020-10-28 13:29:47,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:47,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:47,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:47,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:48,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:48,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:50,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:50,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:51,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:52,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:52,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 346 [2020-10-28 13:29:52,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 13:29:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 13:29:52,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:52,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:29:52,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-28 13:29:52,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:29:52,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:52,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:52,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:52,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:52,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:52,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:52,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:29:52,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:52,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:29:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:52,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:29:52,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:53,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:29:53,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:53,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:53,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:53,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:29:53,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:53,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:29:53,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:53,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:53,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:29:53,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:53,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:29:53,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:53,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:53,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:53,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:53,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:29:53,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:29:53,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:29:53,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:53,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:53,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:29:53,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:53,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-28 13:29:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:53,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:53,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:53,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 13:29:53,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:53,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 13:29:53,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:53,550 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:29:53,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:29:53,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:29:53,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:29:54,008 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 394 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 13:29:54,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1163185073] [2020-10-28 13:29:54,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:29:54,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:29:54,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667035622] [2020-10-28 13:29:54,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:29:54,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:54,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:29:54,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:29:54,011 INFO L87 Difference]: Start difference. First operand 4212 states and 5156 transitions. Second operand 8 states. [2020-10-28 13:29:59,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:29:59,796 INFO L93 Difference]: Finished difference Result 10535 states and 13518 transitions. [2020-10-28 13:29:59,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:29:59,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 330 [2020-10-28 13:29:59,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:29:59,828 INFO L225 Difference]: With dead ends: 10535 [2020-10-28 13:29:59,828 INFO L226 Difference]: Without dead ends: 5581 [2020-10-28 13:29:59,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:29:59,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2020-10-28 13:29:59,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 5540. [2020-10-28 13:29:59,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5540 states. [2020-10-28 13:29:59,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5540 states to 5540 states and 6088 transitions. [2020-10-28 13:30:00,000 INFO L78 Accepts]: Start accepts. Automaton has 5540 states and 6088 transitions. Word has length 330 [2020-10-28 13:30:00,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:00,001 INFO L481 AbstractCegarLoop]: Abstraction has 5540 states and 6088 transitions. [2020-10-28 13:30:00,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:30:00,001 INFO L276 IsEmpty]: Start isEmpty. Operand 5540 states and 6088 transitions. [2020-10-28 13:30:00,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2020-10-28 13:30:00,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:00,015 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:00,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:30:00,015 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:00,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:00,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1967370872, now seen corresponding path program 1 times [2020-10-28 13:30:00,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:00,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1041991537] [2020-10-28 13:30:00,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:00,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:00,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:00,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:05,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:05,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 568 [2020-10-28 13:30:05,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:30:05,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 13:30:05,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:05,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 257 [2020-10-28 13:30:05,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:30:05,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:05,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:05,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:05,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:05,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:05,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:30:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:05,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:05,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:05,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:05,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:05,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:30:05,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:05,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-28 13:30:05,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:05,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:05,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:05,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 242 [2020-10-28 13:30:05,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:05,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:30:06,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:06,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:06,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:06,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:30:06,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:06,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-28 13:30:06,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:06,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:06,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:06,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:30:06,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:30:07,458 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 344 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:30:07,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1041991537] [2020-10-28 13:30:07,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:07,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:07,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334150674] [2020-10-28 13:30:07,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:07,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:07,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:07,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:07,461 INFO L87 Difference]: Start difference. First operand 5540 states and 6088 transitions. Second operand 7 states. [2020-10-28 13:30:11,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:11,728 INFO L93 Difference]: Finished difference Result 10749 states and 11844 transitions. [2020-10-28 13:30:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:30:11,734 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 554 [2020-10-28 13:30:11,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:11,760 INFO L225 Difference]: With dead ends: 10749 [2020-10-28 13:30:11,761 INFO L226 Difference]: Without dead ends: 5552 [2020-10-28 13:30:11,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:30:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5552 states. [2020-10-28 13:30:11,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5552 to 5542. [2020-10-28 13:30:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5542 states. [2020-10-28 13:30:11,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5542 states to 5542 states and 6084 transitions. [2020-10-28 13:30:11,983 INFO L78 Accepts]: Start accepts. Automaton has 5542 states and 6084 transitions. Word has length 554 [2020-10-28 13:30:11,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:11,984 INFO L481 AbstractCegarLoop]: Abstraction has 5542 states and 6084 transitions. [2020-10-28 13:30:11,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:11,984 INFO L276 IsEmpty]: Start isEmpty. Operand 5542 states and 6084 transitions. [2020-10-28 13:30:12,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 623 [2020-10-28 13:30:12,004 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:12,005 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:12,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:30:12,005 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:12,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:12,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1944925152, now seen corresponding path program 1 times [2020-10-28 13:30:12,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:12,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [238424948] [2020-10-28 13:30:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:12,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:12,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:14,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:17,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:17,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 638 [2020-10-28 13:30:17,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:30:17,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5075 [2020-10-28 13:30:17,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:17,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-28 13:30:17,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:30:17,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:17,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:17,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:17,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:17,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:17,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:30:17,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:17,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:17,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:17,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:17,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:17,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:17,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:17,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:17,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:17,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:17,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:30:17,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:17,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:17,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:17,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:17,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:17,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:17,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:30:17,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:17,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:30:17,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:17,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:17,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:17,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:30:17,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:17,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:30:17,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:17,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:17,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:17,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:30:17,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:17,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 13:30:17,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:17,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:17,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:17,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:17,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:30:17,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:18,259 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 474 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-28 13:30:18,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [238424948] [2020-10-28 13:30:18,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:18,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:18,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218369533] [2020-10-28 13:30:18,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:18,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:18,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:18,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:18,262 INFO L87 Difference]: Start difference. First operand 5542 states and 6084 transitions. Second operand 7 states. [2020-10-28 13:30:24,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:24,427 INFO L93 Difference]: Finished difference Result 13164 states and 14656 transitions. [2020-10-28 13:30:24,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:30:24,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 622 [2020-10-28 13:30:24,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:24,476 INFO L225 Difference]: With dead ends: 13164 [2020-10-28 13:30:24,476 INFO L226 Difference]: Without dead ends: 7965 [2020-10-28 13:30:24,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:30:24,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7965 states. [2020-10-28 13:30:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7965 to 7959. [2020-10-28 13:30:24,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7959 states. [2020-10-28 13:30:24,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7959 states to 7959 states and 8726 transitions. [2020-10-28 13:30:24,750 INFO L78 Accepts]: Start accepts. Automaton has 7959 states and 8726 transitions. Word has length 622 [2020-10-28 13:30:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:24,751 INFO L481 AbstractCegarLoop]: Abstraction has 7959 states and 8726 transitions. [2020-10-28 13:30:24,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:24,751 INFO L276 IsEmpty]: Start isEmpty. Operand 7959 states and 8726 transitions. [2020-10-28 13:30:24,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2020-10-28 13:30:24,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:24,764 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:24,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:30:24,764 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:24,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:24,765 INFO L82 PathProgramCache]: Analyzing trace with hash 1206438334, now seen corresponding path program 1 times [2020-10-28 13:30:24,765 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:24,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390436442] [2020-10-28 13:30:24,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:25,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 641 [2020-10-28 13:30:26,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:30:26,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1419 [2020-10-28 13:30:26,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:26,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 416 [2020-10-28 13:30:26,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:30:26,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:26,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:26,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:30:26,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:26,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:26,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:30:26,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:30:26,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:26,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:26,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:26,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:30:26,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:26,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:26,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-28 13:30:26,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:26,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:30:26,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:26,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:26,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:26,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:26,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-28 13:30:26,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:26,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2020-10-28 13:30:26,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:27,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:27,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:30:27,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:27,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-28 13:30:27,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:27,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:30:27,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:27,540 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 469 proven. 2 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-28 13:30:27,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390436442] [2020-10-28 13:30:27,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:27,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:27,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368114163] [2020-10-28 13:30:27,543 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:27,543 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:27,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:27,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:27,544 INFO L87 Difference]: Start difference. First operand 7959 states and 8726 transitions. Second operand 7 states. [2020-10-28 13:30:31,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:31,967 INFO L93 Difference]: Finished difference Result 17944 states and 19937 transitions. [2020-10-28 13:30:31,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:30:31,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 625 [2020-10-28 13:30:31,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:32,005 INFO L225 Difference]: With dead ends: 17944 [2020-10-28 13:30:32,006 INFO L226 Difference]: Without dead ends: 10677 [2020-10-28 13:30:32,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:30:32,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10677 states. [2020-10-28 13:30:32,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10677 to 10669. [2020-10-28 13:30:32,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10669 states. [2020-10-28 13:30:32,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10669 states to 10669 states and 11576 transitions. [2020-10-28 13:30:32,268 INFO L78 Accepts]: Start accepts. Automaton has 10669 states and 11576 transitions. Word has length 625 [2020-10-28 13:30:32,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:32,270 INFO L481 AbstractCegarLoop]: Abstraction has 10669 states and 11576 transitions. [2020-10-28 13:30:32,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:32,270 INFO L276 IsEmpty]: Start isEmpty. Operand 10669 states and 11576 transitions. [2020-10-28 13:30:32,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2020-10-28 13:30:32,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:32,282 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:32,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:30:32,282 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:32,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:32,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1510741328, now seen corresponding path program 1 times [2020-10-28 13:30:32,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:32,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [107658990] [2020-10-28 13:30:32,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:32,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:32,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:32,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:34,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:37,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:37,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 662 [2020-10-28 13:30:37,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:30:37,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4622 [2020-10-28 13:30:37,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:37,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 413 [2020-10-28 13:30:37,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:30:37,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:37,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:37,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:37,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:37,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:37,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:37,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:37,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:30:37,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:37,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:37,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:37,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:37,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:37,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:37,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:37,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:37,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:37,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:30:37,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:37,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:37,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:37,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:37,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:37,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:37,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:37,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:37,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:37,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:30:37,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:30:37,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:37,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:37,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 13:30:37,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:37,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:30:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:37,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:37,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:37,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-28 13:30:37,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:37,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 13:30:37,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:37,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:37,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:37,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:30:37,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:38,248 INFO L134 CoverageAnalysis]: Checked inductivity of 661 backedges. 498 proven. 2 refuted. 0 times theorem prover too weak. 161 trivial. 0 not checked. [2020-10-28 13:30:38,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [107658990] [2020-10-28 13:30:38,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:38,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:38,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358703804] [2020-10-28 13:30:38,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:38,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:38,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:38,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:38,252 INFO L87 Difference]: Start difference. First operand 10669 states and 11576 transitions. Second operand 7 states. [2020-10-28 13:30:42,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:42,873 INFO L93 Difference]: Finished difference Result 23045 states and 25348 transitions. [2020-10-28 13:30:42,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:30:42,875 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 646 [2020-10-28 13:30:42,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:42,920 INFO L225 Difference]: With dead ends: 23045 [2020-10-28 13:30:42,920 INFO L226 Difference]: Without dead ends: 13068 [2020-10-28 13:30:42,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:30:42,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13068 states. [2020-10-28 13:30:43,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13068 to 12705. [2020-10-28 13:30:43,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12705 states. [2020-10-28 13:30:43,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12705 states to 12705 states and 13737 transitions. [2020-10-28 13:30:43,254 INFO L78 Accepts]: Start accepts. Automaton has 12705 states and 13737 transitions. Word has length 646 [2020-10-28 13:30:43,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:43,255 INFO L481 AbstractCegarLoop]: Abstraction has 12705 states and 13737 transitions. [2020-10-28 13:30:43,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:43,255 INFO L276 IsEmpty]: Start isEmpty. Operand 12705 states and 13737 transitions. [2020-10-28 13:30:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 659 [2020-10-28 13:30:43,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:43,266 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:43,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:30:43,267 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:43,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:43,268 INFO L82 PathProgramCache]: Analyzing trace with hash 2058016144, now seen corresponding path program 1 times [2020-10-28 13:30:43,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:43,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28884816] [2020-10-28 13:30:43,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:43,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:43,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:43,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:46,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:48,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:48,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 676 [2020-10-28 13:30:48,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:30:48,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 13:30:48,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:48,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:30:48,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:30:48,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:48,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:48,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:48,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:48,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:48,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:48,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:30:48,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:48,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:48,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:48,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:48,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:48,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:48,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:48,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:48,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:48,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:48,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:48,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-28 13:30:48,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:48,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:48,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:30:48,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:48,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:48,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:49,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:49,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:30:49,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-10-28 13:30:49,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:49,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:49,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:30:49,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:49,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:30:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:49,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:49,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:49,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:30:49,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:49,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:30:49,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:49,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:30:49,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:49,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:49,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:30:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:49,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:49,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:49,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:30:49,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:49,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:30:49,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:49,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-28 13:30:49,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:49,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:49,935 INFO L134 CoverageAnalysis]: Checked inductivity of 830 backedges. 367 proven. 195 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2020-10-28 13:30:49,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28884816] [2020-10-28 13:30:49,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:49,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:49,936 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677773946] [2020-10-28 13:30:49,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:49,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:49,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:49,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:49,939 INFO L87 Difference]: Start difference. First operand 12705 states and 13737 transitions. Second operand 7 states. [2020-10-28 13:30:54,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:54,847 INFO L93 Difference]: Finished difference Result 25733 states and 27847 transitions. [2020-10-28 13:30:54,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:30:54,854 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 658 [2020-10-28 13:30:54,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:54,896 INFO L225 Difference]: With dead ends: 25733 [2020-10-28 13:30:54,896 INFO L226 Difference]: Without dead ends: 13371 [2020-10-28 13:30:54,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:30:54,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13371 states. [2020-10-28 13:30:55,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13371 to 13032. [2020-10-28 13:30:55,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13032 states. [2020-10-28 13:30:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13032 states to 13032 states and 13921 transitions. [2020-10-28 13:30:55,203 INFO L78 Accepts]: Start accepts. Automaton has 13032 states and 13921 transitions. Word has length 658 [2020-10-28 13:30:55,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:55,205 INFO L481 AbstractCegarLoop]: Abstraction has 13032 states and 13921 transitions. [2020-10-28 13:30:55,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 13032 states and 13921 transitions. [2020-10-28 13:30:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 686 [2020-10-28 13:30:55,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:55,218 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:55,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:30:55,218 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:55,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:55,219 INFO L82 PathProgramCache]: Analyzing trace with hash -1701417002, now seen corresponding path program 1 times [2020-10-28 13:30:55,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:55,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928921547] [2020-10-28 13:30:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:55,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:55,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:56,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:56,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 701 [2020-10-28 13:30:56,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1123 [2020-10-28 13:30:56,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:56,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-28 13:30:56,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 13:30:56,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:56,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:56,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:56,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:56,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:56,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:56,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:56,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:30:56,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:56,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:56,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:56,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:56,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:56,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:56,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:56,815 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:30:56,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:56,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-28 13:30:56,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:56,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:56,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:56,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:56,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:56,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:30:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:56,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:56,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:56,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:30:56,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:56,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:30:56,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:56,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:56,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:57,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:30:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:57,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:57,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:57,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:30:57,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:57,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-28 13:30:57,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:57,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:57,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:57,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-28 13:30:57,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 701 backedges. 153 proven. 3 refuted. 0 times theorem prover too weak. 545 trivial. 0 not checked. [2020-10-28 13:30:57,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928921547] [2020-10-28 13:30:57,583 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:57,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:30:57,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727840391] [2020-10-28 13:30:57,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:30:57,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:57,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:30:57,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:30:57,585 INFO L87 Difference]: Start difference. First operand 13032 states and 13921 transitions. Second operand 5 states. [2020-10-28 13:31:01,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:01,104 INFO L93 Difference]: Finished difference Result 27406 states and 29371 transitions. [2020-10-28 13:31:01,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:31:01,106 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 685 [2020-10-28 13:31:01,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:01,153 INFO L225 Difference]: With dead ends: 27406 [2020-10-28 13:31:01,153 INFO L226 Difference]: Without dead ends: 15058 [2020-10-28 13:31:01,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:31:01,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15058 states. [2020-10-28 13:31:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15058 to 15056. [2020-10-28 13:31:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15056 states. [2020-10-28 13:31:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15056 states to 15056 states and 16045 transitions. [2020-10-28 13:31:01,439 INFO L78 Accepts]: Start accepts. Automaton has 15056 states and 16045 transitions. Word has length 685 [2020-10-28 13:31:01,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:01,440 INFO L481 AbstractCegarLoop]: Abstraction has 15056 states and 16045 transitions. [2020-10-28 13:31:01,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:31:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 15056 states and 16045 transitions. [2020-10-28 13:31:01,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1230 [2020-10-28 13:31:01,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:01,476 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:01,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:31:01,477 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:01,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:01,477 INFO L82 PathProgramCache]: Analyzing trace with hash -179939694, now seen corresponding path program 1 times [2020-10-28 13:31:01,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:01,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045933257] [2020-10-28 13:31:01,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:01,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:02,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:06,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:06,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:06,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1251 [2020-10-28 13:31:06,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:31:06,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5051 [2020-10-28 13:31:06,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:06,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:06,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:06,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 802 [2020-10-28 13:31:06,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:31:06,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:07,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:07,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:07,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:07,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:07,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:07,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:31:07,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:07,046 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:07,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:07,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:07,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:07,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:07,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:07,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:07,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:07,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:31:07,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:07,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:31:07,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:07,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:07,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:07,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:07,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:31:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:07,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:07,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:07,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:31:07,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:07,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:31:07,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:07,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:07,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:07,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:07,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:07,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:07,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:31:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:07,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:07,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:07,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:31:07,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:07,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:31:07,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:07,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:07,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:07,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:31:07,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:07,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:07,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:07,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:31:07,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:07,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 13:31:07,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:07,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:07,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-28 13:31:07,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:07,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-28 13:31:07,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:07,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:31:08,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-28 13:31:08,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:08,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:31:08,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:08,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-28 13:31:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:08,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:08,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:08,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:31:08,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:31:08,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:08,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:31:08,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:08,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:10,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2646 backedges. 1105 proven. 111 refuted. 0 times theorem prover too weak. 1430 trivial. 0 not checked. [2020-10-28 13:31:10,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045933257] [2020-10-28 13:31:10,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:10,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:31:10,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757154015] [2020-10-28 13:31:10,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:10,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:10,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:10,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:10,194 INFO L87 Difference]: Start difference. First operand 15056 states and 16045 transitions. Second operand 7 states. [2020-10-28 13:31:14,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:14,702 INFO L93 Difference]: Finished difference Result 30120 states and 32148 transitions. [2020-10-28 13:31:14,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:31:14,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1229 [2020-10-28 13:31:14,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:14,745 INFO L225 Difference]: With dead ends: 30120 [2020-10-28 13:31:14,746 INFO L226 Difference]: Without dead ends: 15748 [2020-10-28 13:31:14,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:31:14,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15748 states. [2020-10-28 13:31:15,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15748 to 15736. [2020-10-28 13:31:15,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15736 states. [2020-10-28 13:31:15,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15736 states to 15736 states and 16750 transitions. [2020-10-28 13:31:15,049 INFO L78 Accepts]: Start accepts. Automaton has 15736 states and 16750 transitions. Word has length 1229 [2020-10-28 13:31:15,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:15,050 INFO L481 AbstractCegarLoop]: Abstraction has 15736 states and 16750 transitions. [2020-10-28 13:31:15,050 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:31:15,050 INFO L276 IsEmpty]: Start isEmpty. Operand 15736 states and 16750 transitions. [2020-10-28 13:31:15,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1333 [2020-10-28 13:31:15,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:15,087 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:15,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:31:15,088 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:15,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:15,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1953378472, now seen corresponding path program 1 times [2020-10-28 13:31:15,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:15,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [958798552] [2020-10-28 13:31:15,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:15,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:15,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:15,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:18,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:19,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:20,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:20,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1354 [2020-10-28 13:31:20,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:31:20,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5182 [2020-10-28 13:31:20,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:20,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 905 [2020-10-28 13:31:20,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:31:20,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:31:20,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:20,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:20,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:20,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:20,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:20,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:31:20,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:20,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:20,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:20,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:20,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:20,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:20,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:31:20,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:20,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-28 13:31:20,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:20,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:20,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:20,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:20,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:20,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:31:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:21,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:21,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:31:21,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:21,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:31:21,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:21,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:21,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:21,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:21,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:31:21,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:21,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:21,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:21,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:31:21,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:21,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 13:31:21,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:21,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:21,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:21,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:21,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-28 13:31:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:21,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:21,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:21,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:31:21,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:21,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-28 13:31:21,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:21,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:21,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 257 [2020-10-28 13:31:21,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:21,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 897 [2020-10-28 13:31:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:21,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:21,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:21,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:31:21,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:21,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-28 13:31:21,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:21,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:21,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:31:21,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:22,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1170 [2020-10-28 13:31:22,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:22,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:22,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:22,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:31:22,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:22,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:31:22,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:22,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:31:22,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:22,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:23,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2927 backedges. 1208 proven. 111 refuted. 0 times theorem prover too weak. 1608 trivial. 0 not checked. [2020-10-28 13:31:23,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [958798552] [2020-10-28 13:31:23,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:23,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:31:23,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812658011] [2020-10-28 13:31:23,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:23,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:23,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:23,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:23,272 INFO L87 Difference]: Start difference. First operand 15736 states and 16750 transitions. Second operand 7 states. [2020-10-28 13:31:29,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:29,781 INFO L93 Difference]: Finished difference Result 32479 states and 34835 transitions. [2020-10-28 13:31:29,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:31:29,782 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1332 [2020-10-28 13:31:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:29,824 INFO L225 Difference]: With dead ends: 32479 [2020-10-28 13:31:29,824 INFO L226 Difference]: Without dead ends: 17427 [2020-10-28 13:31:29,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:31:29,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17427 states. [2020-10-28 13:31:30,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17427 to 17090. [2020-10-28 13:31:30,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17090 states. [2020-10-28 13:31:30,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17090 states to 17090 states and 18183 transitions. [2020-10-28 13:31:30,322 INFO L78 Accepts]: Start accepts. Automaton has 17090 states and 18183 transitions. Word has length 1332 [2020-10-28 13:31:30,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:30,324 INFO L481 AbstractCegarLoop]: Abstraction has 17090 states and 18183 transitions. [2020-10-28 13:31:30,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:31:30,324 INFO L276 IsEmpty]: Start isEmpty. Operand 17090 states and 18183 transitions. [2020-10-28 13:31:30,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1683 [2020-10-28 13:31:30,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:30,374 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:30,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:31:30,374 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:30,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:30,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1486263372, now seen corresponding path program 1 times [2020-10-28 13:31:30,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:30,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821347473] [2020-10-28 13:31:30,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:30,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:30,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:31,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:31,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:35,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:35,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1706 [2020-10-28 13:31:35,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:31:35,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5123 [2020-10-28 13:31:35,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:35,869 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:35,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:31:35,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1278 [2020-10-28 13:31:35,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 369 [2020-10-28 13:31:35,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:36,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:36,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:36,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:36,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:36,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:36,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:31:36,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:36,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:36,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:36,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:36,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:36,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:36,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:31:36,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:36,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:31:36,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:36,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:36,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:36,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:36,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:31:36,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:36,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:36,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:36,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:31:36,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:31:36,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:36,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:36,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:36,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:31:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:36,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:36,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:36,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:31:36,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:36,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:31:36,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:36,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:36,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:36,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:36,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:36,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2020-10-28 13:31:36,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:36,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:36,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:36,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-28 13:31:36,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:36,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:31:36,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:36,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:36,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:36,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-28 13:31:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:36,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:37,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:37,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:31:37,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:37,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 13:31:37,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:37,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:37,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:37,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:37,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 268 [2020-10-28 13:31:37,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:37,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1268 [2020-10-28 13:31:37,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:37,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:37,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:37,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:37,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:31:37,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:31:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 13:31:37,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:37,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:37,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-28 13:31:37,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:37,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1380 [2020-10-28 13:31:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:37,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:37,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:37,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-28 13:31:37,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:37,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-28 13:31:37,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:37,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:37,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:31:37,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 4617 backedges. 1703 proven. 8 refuted. 0 times theorem prover too weak. 2906 trivial. 0 not checked. [2020-10-28 13:31:39,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821347473] [2020-10-28 13:31:39,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:39,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:31:39,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232666092] [2020-10-28 13:31:39,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:31:39,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:39,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:31:39,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:31:39,769 INFO L87 Difference]: Start difference. First operand 17090 states and 18183 transitions. Second operand 8 states. [2020-10-28 13:31:46,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:46,001 INFO L93 Difference]: Finished difference Result 35525 states and 37920 transitions. [2020-10-28 13:31:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:31:46,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1682 [2020-10-28 13:31:46,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:46,046 INFO L225 Difference]: With dead ends: 35525 [2020-10-28 13:31:46,046 INFO L226 Difference]: Without dead ends: 17746 [2020-10-28 13:31:46,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:31:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17746 states. [2020-10-28 13:31:46,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17746 to 17744. [2020-10-28 13:31:46,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17744 states. [2020-10-28 13:31:46,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17744 states to 17744 states and 18580 transitions. [2020-10-28 13:31:46,608 INFO L78 Accepts]: Start accepts. Automaton has 17744 states and 18580 transitions. Word has length 1682 [2020-10-28 13:31:46,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:46,610 INFO L481 AbstractCegarLoop]: Abstraction has 17744 states and 18580 transitions. [2020-10-28 13:31:46,610 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:31:46,610 INFO L276 IsEmpty]: Start isEmpty. Operand 17744 states and 18580 transitions. [2020-10-28 13:31:46,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2037 [2020-10-28 13:31:46,696 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:46,697 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:46,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:31:46,698 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:46,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:46,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1484805940, now seen corresponding path program 1 times [2020-10-28 13:31:46,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:46,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [423827342] [2020-10-28 13:31:46,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:47,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:47,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:48,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:48,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:52,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:52,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2066 [2020-10-28 13:31:52,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:31:52,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5157 [2020-10-28 13:31:52,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:52,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1003 [2020-10-28 13:31:52,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:31:52,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:52,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:52,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:52,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:52,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:52,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:52,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:52,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:31:52,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:52,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:52,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:52,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:52,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:52,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:52,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:52,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:52,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:31:52,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:52,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:31:52,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:52,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:52,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:52,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:52,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:52,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:52,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:31:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:52,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:52,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:52,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:31:52,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:52,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:31:52,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:52,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:52,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:52,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:52,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:31:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:52,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:52,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:52,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:31:52,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:52,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:31:52,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:52,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:52,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:52,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:52,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:52,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:52,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 719 [2020-10-28 13:31:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:53,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:53,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-28 13:31:53,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:53,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 13:31:53,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:53,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:53,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 271 [2020-10-28 13:31:53,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:53,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-28 13:31:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:53,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:53,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:53,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:31:53,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:53,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-10-28 13:31:53,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:53,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:53,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:53,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:53,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:31:53,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:53,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1268 [2020-10-28 13:31:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:53,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:53,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:53,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:31:53,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:53,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:31:53,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:53,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:31:53,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:53,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:53,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1380 [2020-10-28 13:31:53,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:53,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:53,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:53,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:31:53,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:31:53,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:53,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:31:53,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:53,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:53,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1451 [2020-10-28 13:31:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:54,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:54,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:54,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:31:54,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:54,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-28 13:31:54,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:54,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:31:54,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:54,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:54,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1705 [2020-10-28 13:31:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:54,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:54,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:54,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:31:54,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:54,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:31:54,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:54,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-28 13:31:54,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:54,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:54,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1870 [2020-10-28 13:31:54,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:54,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:54,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:54,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 13:31:54,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:54,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:31:54,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:54,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:54,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:54,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-28 13:31:54,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:54,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:56,885 INFO L134 CoverageAnalysis]: Checked inductivity of 7436 backedges. 1567 proven. 705 refuted. 0 times theorem prover too weak. 5164 trivial. 0 not checked. [2020-10-28 13:31:56,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [423827342] [2020-10-28 13:31:56,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:56,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:31:56,886 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568892280] [2020-10-28 13:31:56,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:56,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:56,887 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:56,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:56,887 INFO L87 Difference]: Start difference. First operand 17744 states and 18580 transitions. Second operand 7 states. [2020-10-28 13:32:01,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:01,460 INFO L93 Difference]: Finished difference Result 34810 states and 36479 transitions. [2020-10-28 13:32:01,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:32:01,461 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 2036 [2020-10-28 13:32:01,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:01,495 INFO L225 Difference]: With dead ends: 34810 [2020-10-28 13:32:01,495 INFO L226 Difference]: Without dead ends: 17750 [2020-10-28 13:32:01,515 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:32:01,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17750 states. [2020-10-28 13:32:01,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17750 to 17744. [2020-10-28 13:32:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17744 states. [2020-10-28 13:32:01,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17744 states to 17744 states and 18572 transitions. [2020-10-28 13:32:01,806 INFO L78 Accepts]: Start accepts. Automaton has 17744 states and 18572 transitions. Word has length 2036 [2020-10-28 13:32:01,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:01,807 INFO L481 AbstractCegarLoop]: Abstraction has 17744 states and 18572 transitions. [2020-10-28 13:32:01,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:32:01,807 INFO L276 IsEmpty]: Start isEmpty. Operand 17744 states and 18572 transitions. [2020-10-28 13:32:01,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2076 [2020-10-28 13:32:01,863 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:01,865 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:01,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:32:01,865 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:01,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:01,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1958821902, now seen corresponding path program 1 times [2020-10-28 13:32:01,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:01,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244294146] [2020-10-28 13:32:01,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:02,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:03,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:03,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:04,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2109 [2020-10-28 13:32:07,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:32:07,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 13:32:07,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:07,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1046 [2020-10-28 13:32:07,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:32:07,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:07,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:07,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:32:07,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:07,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:07,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:32:07,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:32:07,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:07,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:07,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:32:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:32:07,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:32:07,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:07,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:07,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:07,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:32:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:32:07,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:32:07,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:07,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:07,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:07,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:32:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:32:07,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:32:07,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:07,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:07,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:32:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:32:07,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:32:07,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:07,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:07,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 784 [2020-10-28 13:32:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:32:08,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:32:08,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:08,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-28 13:32:08,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1034 [2020-10-28 13:32:08,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:32:08,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-10-28 13:32:08,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:08,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:08,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:32:08,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1307 [2020-10-28 13:32:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:32:08,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:32:08,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:32:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1419 [2020-10-28 13:32:08,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:08,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:08,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:32:08,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:08,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:32:08,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:08,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:32:08,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:08,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:08,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1490 [2020-10-28 13:32:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:08,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:09,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:09,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:32:09,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:09,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:32:09,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:09,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:09,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:09,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:32:09,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:09,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:09,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1744 [2020-10-28 13:32:09,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:09,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:09,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:09,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:32:09,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:09,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:32:09,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:09,180 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-28 13:32:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:09,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:09,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1909 [2020-10-28 13:32:09,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:09,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:09,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:09,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 13:32:09,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:09,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:32:09,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:09,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:09,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:09,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-28 13:32:09,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:09,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:12,132 INFO L134 CoverageAnalysis]: Checked inductivity of 8782 backedges. 1753 proven. 705 refuted. 0 times theorem prover too weak. 6324 trivial. 0 not checked. [2020-10-28 13:32:12,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244294146] [2020-10-28 13:32:12,132 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:12,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:32:12,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237675349] [2020-10-28 13:32:12,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:32:12,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:12,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:32:12,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:32:12,135 INFO L87 Difference]: Start difference. First operand 17744 states and 18572 transitions. Second operand 7 states. [2020-10-28 13:32:16,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:16,733 INFO L93 Difference]: Finished difference Result 35480 states and 37150 transitions. [2020-10-28 13:32:16,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:32:16,740 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 2075 [2020-10-28 13:32:16,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:16,793 INFO L225 Difference]: With dead ends: 35480 [2020-10-28 13:32:16,793 INFO L226 Difference]: Without dead ends: 18420 [2020-10-28 13:32:16,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:32:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18420 states. [2020-10-28 13:32:17,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18420 to 18418. [2020-10-28 13:32:17,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18418 states. [2020-10-28 13:32:17,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18418 states to 18418 states and 19249 transitions. [2020-10-28 13:32:17,188 INFO L78 Accepts]: Start accepts. Automaton has 18418 states and 19249 transitions. Word has length 2075 [2020-10-28 13:32:17,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:17,190 INFO L481 AbstractCegarLoop]: Abstraction has 18418 states and 19249 transitions. [2020-10-28 13:32:17,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:32:17,190 INFO L276 IsEmpty]: Start isEmpty. Operand 18418 states and 19249 transitions. [2020-10-28 13:32:17,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2115 [2020-10-28 13:32:17,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:17,258 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:17,258 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:32:17,258 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:17,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:17,259 INFO L82 PathProgramCache]: Analyzing trace with hash 44429112, now seen corresponding path program 1 times [2020-10-28 13:32:17,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:17,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577320111] [2020-10-28 13:32:17,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:17,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:18,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:18,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:19,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:19,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:22,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:22,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 2148 [2020-10-28 13:32:22,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:32:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 13:32:22,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:22,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1085 [2020-10-28 13:32:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-28 13:32:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:23,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:23,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:23,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:23,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:32:23,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:23,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:23,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:23,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:23,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:23,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:23,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:32:23,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-28 13:32:23,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:23,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:32:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:23,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:23,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:32:23,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:32:23,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:23,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:23,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:23,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:32:23,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:23,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:23,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:32:23,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:23,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:32:23,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:23,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:23,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:32:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:23,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:23,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:32:23,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:32:23,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:23,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:23,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:23,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:23,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:23,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 669 [2020-10-28 13:32:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:23,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:23,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 13:32:23,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:23,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:32:23,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:23,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:23,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 931 [2020-10-28 13:32:23,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:23,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:23,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:32:23,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:23,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:32:23,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:23,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:23,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:23,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:23,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 13:32:23,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:23,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1073 [2020-10-28 13:32:23,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:23,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:24,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:24,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 13:32:24,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:24,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 561 [2020-10-28 13:32:24,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:24,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:24,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-28 13:32:24,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:24,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1346 [2020-10-28 13:32:24,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:24,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:24,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:24,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-28 13:32:24,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:32:24,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:24,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:32:24,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:24,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:24,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1458 [2020-10-28 13:32:24,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:24,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:24,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:24,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:32:24,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:24,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:32:24,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:24,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:24,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:24,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 13:32:24,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:24,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:24,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1529 [2020-10-28 13:32:25,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:25,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:25,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:25,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-28 13:32:25,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:25,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:32:25,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:25,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:25,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:25,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-28 13:32:25,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:25,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:25,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1783 [2020-10-28 13:32:25,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:25,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:25,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:25,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:32:25,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:25,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 13:32:25,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:25,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 163 [2020-10-28 13:32:25,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:25,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:25,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1948 [2020-10-28 13:32:25,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:25,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:25,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:25,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 13:32:25,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:25,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:32:25,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:25,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-28 13:32:25,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:25,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:29,826 INFO L134 CoverageAnalysis]: Checked inductivity of 8975 backedges. 1792 proven. 705 refuted. 0 times theorem prover too weak. 6478 trivial. 0 not checked. [2020-10-28 13:32:29,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577320111] [2020-10-28 13:32:29,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:29,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:32:29,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428715141] [2020-10-28 13:32:29,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:32:29,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:29,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:32:29,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:32:29,829 INFO L87 Difference]: Start difference. First operand 18418 states and 19249 transitions. Second operand 8 states.