/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:03:54,791 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:03:54,795 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:03:54,852 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:03:54,852 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:03:54,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:03:54,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:03:54,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:03:54,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:03:54,875 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:03:54,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:03:54,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:03:54,878 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:03:54,881 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:03:54,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:03:54,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:03:54,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:03:54,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:03:54,897 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:03:54,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:03:54,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:03:54,907 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:03:54,908 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:03:54,911 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:03:54,919 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:03:54,920 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:03:54,920 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:03:54,921 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:03:54,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:03:54,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:03:54,925 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:03:54,926 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:03:54,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:03:54,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:03:54,930 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:03:54,930 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:03:54,931 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:03:54,931 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:03:54,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:03:54,932 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:03:54,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:03:54,940 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 12:03:54,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:03:54,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:03:54,995 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:03:54,996 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:03:54,996 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:03:54,996 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:03:54,996 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:03:54,996 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:03:54,997 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:03:54,997 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:03:54,999 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:03:54,999 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:03:54,999 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:03:55,000 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:03:55,000 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:03:55,000 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:03:55,000 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:03:55,000 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:03:55,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:03:55,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:03:55,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:03:55,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:03:55,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:03:55,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:03:55,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:03:55,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:03:55,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:03:55,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:03:55,016 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:03:55,016 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:03:55,416 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:03:55,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:03:55,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:03:55,447 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:03:55,451 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:03:55,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label16.c [2020-10-28 12:03:55,536 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f70fae4dc/4f47182037604512836bb9242520cc2a/FLAG0d927d489 [2020-10-28 12:03:56,405 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:03:56,406 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label16.c [2020-10-28 12:03:56,433 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f70fae4dc/4f47182037604512836bb9242520cc2a/FLAG0d927d489 [2020-10-28 12:03:56,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f70fae4dc/4f47182037604512836bb9242520cc2a [2020-10-28 12:03:56,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:03:56,608 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:03:56,613 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:03:56,613 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:03:56,617 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:03:56,619 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:03:56" (1/1) ... [2020-10-28 12:03:56,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b835bcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:56, skipping insertion in model container [2020-10-28 12:03:56,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:03:56" (1/1) ... [2020-10-28 12:03:56,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:03:56,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:03:57,377 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:03:57,387 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:03:57,591 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:03:57,613 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:03:57,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:57 WrapperNode [2020-10-28 12:03:57,614 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:03:57,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:03:57,616 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:03:57,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:03:57,630 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:57" (1/1) ... [2020-10-28 12:03:57,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:57" (1/1) ... [2020-10-28 12:03:57,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:57" (1/1) ... [2020-10-28 12:03:57,678 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:57" (1/1) ... [2020-10-28 12:03:57,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:57" (1/1) ... [2020-10-28 12:03:57,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:57" (1/1) ... [2020-10-28 12:03:57,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:57" (1/1) ... [2020-10-28 12:03:57,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:03:57,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:03:57,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:03:57,792 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:03:57,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:03:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:03:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:03:57,872 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:03:57,873 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:03:57,873 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:03:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:03:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:03:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:03:57,873 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:03:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:03:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:03:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:03:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:03:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:03:57,874 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:03:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:03:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:03:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:03:57,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:03:59,964 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:03:59,965 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:03:59,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:03:59 BoogieIcfgContainer [2020-10-28 12:03:59,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:03:59,969 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:03:59,969 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:03:59,972 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:03:59,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:03:56" (1/3) ... [2020-10-28 12:03:59,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2376f7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:03:59, skipping insertion in model container [2020-10-28 12:03:59,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:03:57" (2/3) ... [2020-10-28 12:03:59,974 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2376f7cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:03:59, skipping insertion in model container [2020-10-28 12:03:59,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:03:59" (3/3) ... [2020-10-28 12:03:59,976 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label16.c [2020-10-28 12:03:59,988 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:03:59,994 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:04:00,008 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:04:00,040 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:04:00,041 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:04:00,041 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:04:00,041 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:04:00,041 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:04:00,042 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:04:00,042 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:04:00,042 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:04:00,067 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-28 12:04:00,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-28 12:04:00,075 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:00,076 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] [2020-10-28 12:04:00,077 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:00,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:00,084 INFO L82 PathProgramCache]: Analyzing trace with hash 343382760, now seen corresponding path program 1 times [2020-10-28 12:04:00,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:00,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [886303380] [2020-10-28 12:04:00,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:00,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:00,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:00,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:00,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-28 12:04:00,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:00,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-10-28 12:04:00,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:00,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:04:00,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:04:00,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 12:04:00,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:04:01,073 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-28 12:04:01,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:01,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:01,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:01,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:01,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:01,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:01,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:04:01,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:01,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:01,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:01,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:01,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:04:01,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:04:01,159 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [886303380] [2020-10-28 12:04:01,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:04:01,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:04:01,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757448378] [2020-10-28 12:04:01,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:04:01,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:01,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:04:01,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:04:01,188 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-28 12:04:01,347 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-28 12:04:04,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:04,305 INFO L93 Difference]: Finished difference Result 793 states and 1388 transitions. [2020-10-28 12:04:04,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:04:04,307 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-28 12:04:04,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:04,324 INFO L225 Difference]: With dead ends: 793 [2020-10-28 12:04:04,325 INFO L226 Difference]: Without dead ends: 432 [2020-10-28 12:04:04,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:04:04,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-28 12:04:04,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 426. [2020-10-28 12:04:04,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2020-10-28 12:04:04,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 613 transitions. [2020-10-28 12:04:04,419 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 613 transitions. Word has length 50 [2020-10-28 12:04:04,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:04,420 INFO L481 AbstractCegarLoop]: Abstraction has 426 states and 613 transitions. [2020-10-28 12:04:04,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:04:04,420 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 613 transitions. [2020-10-28 12:04:04,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 12:04:04,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:04,426 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:04,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:04:04,427 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:04,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:04,428 INFO L82 PathProgramCache]: Analyzing trace with hash 247409380, now seen corresponding path program 1 times [2020-10-28 12:04:04,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:04,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890371829] [2020-10-28 12:04:04,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:04,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:04,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:05,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:06,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:06,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 12:04:06,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:06,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1880 [2020-10-28 12:04:06,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:06,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:06,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:04:06,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:04:06,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:04:06,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:04:06,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:06,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:06,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:06,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:06,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:06,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 12:04:06,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:06,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:06,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:06,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:04:06,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 12:04:06,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:06,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:06,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:06,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:06,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:04:06,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:06,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-28 12:04:06,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:06,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:06,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:06,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:04:06,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:06,914 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:04:06,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890371829] [2020-10-28 12:04:06,915 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:04:06,915 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:04:06,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974153703] [2020-10-28 12:04:06,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:06,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:06,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:06,921 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:06,922 INFO L87 Difference]: Start difference. First operand 426 states and 613 transitions. Second operand 7 states. [2020-10-28 12:04:10,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:10,069 INFO L93 Difference]: Finished difference Result 1266 states and 1840 transitions. [2020-10-28 12:04:10,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:04:10,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 122 [2020-10-28 12:04:10,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:10,083 INFO L225 Difference]: With dead ends: 1266 [2020-10-28 12:04:10,083 INFO L226 Difference]: Without dead ends: 846 [2020-10-28 12:04:10,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:04:10,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 846 states. [2020-10-28 12:04:10,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 846 to 822. [2020-10-28 12:04:10,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 822 states. [2020-10-28 12:04:10,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 822 states to 822 states and 1103 transitions. [2020-10-28 12:04:10,175 INFO L78 Accepts]: Start accepts. Automaton has 822 states and 1103 transitions. Word has length 122 [2020-10-28 12:04:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:10,179 INFO L481 AbstractCegarLoop]: Abstraction has 822 states and 1103 transitions. [2020-10-28 12:04:10,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:10,179 INFO L276 IsEmpty]: Start isEmpty. Operand 822 states and 1103 transitions. [2020-10-28 12:04:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 12:04:10,184 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:10,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:10,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:04:10,189 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:10,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:10,190 INFO L82 PathProgramCache]: Analyzing trace with hash -989112108, now seen corresponding path program 1 times [2020-10-28 12:04:10,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:10,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706037637] [2020-10-28 12:04:10,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:10,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:10,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:11,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:11,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:12,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:12,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-28 12:04:12,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:04:12,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1872 [2020-10-28 12:04:12,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:12,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:04:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:04:12,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 12:04:12,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:04:12,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:12,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:12,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:12,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:12,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:12,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:04:12,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:12,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:12,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:04:12,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:12,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:12,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:12,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:12,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:04:12,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:12,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 12:04:12,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:12,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:12,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:04:12,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:04:12,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706037637] [2020-10-28 12:04:12,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:04:12,606 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:04:12,606 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680012654] [2020-10-28 12:04:12,607 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:12,607 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:12,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:12,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:12,608 INFO L87 Difference]: Start difference. First operand 822 states and 1103 transitions. Second operand 7 states. [2020-10-28 12:04:15,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:15,525 INFO L93 Difference]: Finished difference Result 2073 states and 2745 transitions. [2020-10-28 12:04:15,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:04:15,526 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-28 12:04:15,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:15,536 INFO L225 Difference]: With dead ends: 2073 [2020-10-28 12:04:15,536 INFO L226 Difference]: Without dead ends: 1257 [2020-10-28 12:04:15,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:04:15,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1257 states. [2020-10-28 12:04:15,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1257 to 1220. [2020-10-28 12:04:15,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1220 states. [2020-10-28 12:04:15,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 1544 transitions. [2020-10-28 12:04:15,602 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 1544 transitions. Word has length 130 [2020-10-28 12:04:15,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:15,602 INFO L481 AbstractCegarLoop]: Abstraction has 1220 states and 1544 transitions. [2020-10-28 12:04:15,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:15,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 1544 transitions. [2020-10-28 12:04:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-28 12:04:15,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:15,605 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:15,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:04:15,606 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:15,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:15,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1113194405, now seen corresponding path program 1 times [2020-10-28 12:04:15,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:15,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [289353145] [2020-10-28 12:04:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:15,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:16,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:16,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-28 12:04:16,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:16,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-28 12:04:16,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:16,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:04:16,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 12:04:16,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:16,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:16,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:16,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:16,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:16,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:04:16,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:16,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:16,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:16,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:16,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:16,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:16,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:16,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:16,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:16,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:16,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 12:04:16,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:16,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:16,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:16,527 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 41 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:04:16,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [289353145] [2020-10-28 12:04:16,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:16,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:04:16,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124953519] [2020-10-28 12:04:16,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:04:16,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:16,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:04:16,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:04:16,541 INFO L87 Difference]: Start difference. First operand 1220 states and 1544 transitions. Second operand 5 states. [2020-10-28 12:04:19,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:19,170 INFO L93 Difference]: Finished difference Result 2473 states and 3328 transitions. [2020-10-28 12:04:19,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:04:19,171 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-28 12:04:19,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:19,180 INFO L225 Difference]: With dead ends: 2473 [2020-10-28 12:04:19,180 INFO L226 Difference]: Without dead ends: 1637 [2020-10-28 12:04:19,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:19,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1637 states. [2020-10-28 12:04:19,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1637 to 1618. [2020-10-28 12:04:19,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1618 states. [2020-10-28 12:04:19,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1618 states to 1618 states and 2106 transitions. [2020-10-28 12:04:19,241 INFO L78 Accepts]: Start accepts. Automaton has 1618 states and 2106 transitions. Word has length 181 [2020-10-28 12:04:19,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:19,242 INFO L481 AbstractCegarLoop]: Abstraction has 1618 states and 2106 transitions. [2020-10-28 12:04:19,242 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:04:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 1618 states and 2106 transitions. [2020-10-28 12:04:19,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-28 12:04:19,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:19,247 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, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:04:19,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:04:19,247 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:19,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:19,248 INFO L82 PathProgramCache]: Analyzing trace with hash 14971130, now seen corresponding path program 1 times [2020-10-28 12:04:19,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:19,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750273472] [2020-10-28 12:04:19,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:19,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:19,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:20,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:21,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:21,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-28 12:04:21,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:21,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1929 [2020-10-28 12:04:21,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:21,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:21,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:21,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:04:21,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:04:21,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:21,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:21,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:21,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:21,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:21,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:21,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:04:21,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:21,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:21,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:21,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:21,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:21,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:21,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:21,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:21,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:21,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:21,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:04:21,571 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:21,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 12:04:21,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:21,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:21,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:21,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:21,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:04:21,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:21,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:04:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:21,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:21,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:21,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:04:21,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 12:04:21,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:21,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:04:21,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 153 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:04:21,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750273472] [2020-10-28 12:04:21,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:21,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:21,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922937309] [2020-10-28 12:04:21,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:21,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:21,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:21,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:21,898 INFO L87 Difference]: Start difference. First operand 1618 states and 2106 transitions. Second operand 7 states. [2020-10-28 12:04:25,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:25,414 INFO L93 Difference]: Finished difference Result 3384 states and 5012 transitions. [2020-10-28 12:04:25,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:04:25,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-28 12:04:25,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:25,436 INFO L225 Difference]: With dead ends: 3384 [2020-10-28 12:04:25,437 INFO L226 Difference]: Without dead ends: 2150 [2020-10-28 12:04:25,442 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:25,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2150 states. [2020-10-28 12:04:25,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2150 to 2050. [2020-10-28 12:04:25,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2020-10-28 12:04:25,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 2682 transitions. [2020-10-28 12:04:25,575 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 2682 transitions. Word has length 238 [2020-10-28 12:04:25,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:25,576 INFO L481 AbstractCegarLoop]: Abstraction has 2050 states and 2682 transitions. [2020-10-28 12:04:25,576 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:25,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 2682 transitions. [2020-10-28 12:04:25,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-28 12:04:25,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:25,582 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, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:04:25,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:04:25,582 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:25,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:25,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1569228690, now seen corresponding path program 1 times [2020-10-28 12:04:25,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:25,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625930239] [2020-10-28 12:04:25,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:25,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:25,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:25,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:26,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:28,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:28,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-28 12:04:28,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:28,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3149 [2020-10-28 12:04:28,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:28,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:28,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:28,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-28 12:04:28,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:04:28,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:28,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:28,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:28,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:28,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:28,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:28,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:04:28,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:28,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:28,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:28,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:29,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:29,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:29,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:04:29,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:29,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 12:04:29,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:29,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:29,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:29,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-28 12:04:29,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:29,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:04:29,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:29,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:29,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:29,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:04:29,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:04:29,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:29,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:29,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:04:29,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:04:29,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625930239] [2020-10-28 12:04:29,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:29,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:29,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388701218] [2020-10-28 12:04:29,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:29,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:29,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:29,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:29,471 INFO L87 Difference]: Start difference. First operand 2050 states and 2682 transitions. Second operand 7 states. [2020-10-28 12:04:32,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:32,881 INFO L93 Difference]: Finished difference Result 4996 states and 6990 transitions. [2020-10-28 12:04:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:04:32,882 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-28 12:04:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:32,902 INFO L225 Difference]: With dead ends: 4996 [2020-10-28 12:04:32,902 INFO L226 Difference]: Without dead ends: 3330 [2020-10-28 12:04:32,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3330 states. [2020-10-28 12:04:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3330 to 3239. [2020-10-28 12:04:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3239 states. [2020-10-28 12:04:33,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3239 states to 3239 states and 4047 transitions. [2020-10-28 12:04:33,014 INFO L78 Accepts]: Start accepts. Automaton has 3239 states and 4047 transitions. Word has length 239 [2020-10-28 12:04:33,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:33,015 INFO L481 AbstractCegarLoop]: Abstraction has 3239 states and 4047 transitions. [2020-10-28 12:04:33,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:33,017 INFO L276 IsEmpty]: Start isEmpty. Operand 3239 states and 4047 transitions. [2020-10-28 12:04:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-28 12:04:33,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:33,023 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:33,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:04:33,024 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:33,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:33,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1118001022, now seen corresponding path program 1 times [2020-10-28 12:04:33,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:33,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [171950926] [2020-10-28 12:04:33,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:33,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:33,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:33,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:36,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:36,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 263 [2020-10-28 12:04:36,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:36,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3219 [2020-10-28 12:04:36,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:36,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-28 12:04:36,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:04:36,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:36,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:36,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:36,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:36,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:36,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:04:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:36,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:36,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:36,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:36,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:36,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:04:36,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 12:04:36,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:36,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 12:04:36,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:36,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:04:36,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:36,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:36,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:04:36,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:36,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-28 12:04:36,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:36,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 12:04:36,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:04:37,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [171950926] [2020-10-28 12:04:37,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:37,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:37,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9089515] [2020-10-28 12:04:37,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:37,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:37,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:37,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:37,050 INFO L87 Difference]: Start difference. First operand 3239 states and 4047 transitions. Second operand 7 states. [2020-10-28 12:04:40,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:40,179 INFO L93 Difference]: Finished difference Result 5215 states and 6904 transitions. [2020-10-28 12:04:40,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:04:40,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 249 [2020-10-28 12:04:40,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:40,201 INFO L225 Difference]: With dead ends: 5215 [2020-10-28 12:04:40,201 INFO L226 Difference]: Without dead ends: 3734 [2020-10-28 12:04:40,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:04:40,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3734 states. [2020-10-28 12:04:40,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3734 to 3629. [2020-10-28 12:04:40,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3629 states. [2020-10-28 12:04:40,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3629 states to 3629 states and 4533 transitions. [2020-10-28 12:04:40,317 INFO L78 Accepts]: Start accepts. Automaton has 3629 states and 4533 transitions. Word has length 249 [2020-10-28 12:04:40,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:40,317 INFO L481 AbstractCegarLoop]: Abstraction has 3629 states and 4533 transitions. [2020-10-28 12:04:40,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:40,317 INFO L276 IsEmpty]: Start isEmpty. Operand 3629 states and 4533 transitions. [2020-10-28 12:04:40,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-28 12:04:40,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:40,323 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:40,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:04:40,323 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:40,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:40,324 INFO L82 PathProgramCache]: Analyzing trace with hash -725490462, now seen corresponding path program 1 times [2020-10-28 12:04:40,324 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:40,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423490711] [2020-10-28 12:04:40,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:40,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:40,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:40,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 264 [2020-10-28 12:04:41,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:41,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 685 [2020-10-28 12:04:41,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:41,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-28 12:04:41,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 12:04:41,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:41,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:41,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:04:41,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:41,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:41,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:41,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:04:41,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:41,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 12:04:41,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:41,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:41,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:41,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:04:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:41,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:41,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:41,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-28 12:04:41,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:41,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 12:04:41,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:41,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:41,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:04:41,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:04:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-28 12:04:41,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423490711] [2020-10-28 12:04:41,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:41,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:04:41,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94647253] [2020-10-28 12:04:41,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:04:41,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:41,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:04:41,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:04:41,627 INFO L87 Difference]: Start difference. First operand 3629 states and 4533 transitions. Second operand 5 states. [2020-10-28 12:04:44,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:44,349 INFO L93 Difference]: Finished difference Result 6332 states and 8363 transitions. [2020-10-28 12:04:44,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:04:44,353 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2020-10-28 12:04:44,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:44,377 INFO L225 Difference]: With dead ends: 6332 [2020-10-28 12:04:44,378 INFO L226 Difference]: Without dead ends: 4649 [2020-10-28 12:04:44,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:44,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4649 states. [2020-10-28 12:04:44,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4649 to 4629. [2020-10-28 12:04:44,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4629 states. [2020-10-28 12:04:44,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4629 states to 4629 states and 5901 transitions. [2020-10-28 12:04:44,536 INFO L78 Accepts]: Start accepts. Automaton has 4629 states and 5901 transitions. Word has length 250 [2020-10-28 12:04:44,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:44,537 INFO L481 AbstractCegarLoop]: Abstraction has 4629 states and 5901 transitions. [2020-10-28 12:04:44,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:04:44,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4629 states and 5901 transitions. [2020-10-28 12:04:44,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2020-10-28 12:04:44,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:44,550 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:04:44,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:04:44,551 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:44,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:44,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1757477972, now seen corresponding path program 1 times [2020-10-28 12:04:44,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:44,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437962602] [2020-10-28 12:04:44,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:44,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:44,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:45,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:46,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:46,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 297 [2020-10-28 12:04:46,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:04:46,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1839 [2020-10-28 12:04:46,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:46,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:46,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:04:46,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:04:46,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-28 12:04:46,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:46,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:46,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:46,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:46,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:46,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:46,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:46,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:04:46,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:46,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:46,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:46,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:46,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:46,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:46,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:46,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:46,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:46,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:04:46,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:46,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:46,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:46,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:46,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:04:46,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:46,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:46,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:46,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:04:46,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:46,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-28 12:04:46,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:46,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:46,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:46,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:04:46,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:47,217 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 177 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:04:47,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437962602] [2020-10-28 12:04:47,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:47,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:04:47,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633758661] [2020-10-28 12:04:47,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:04:47,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:47,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:04:47,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:04:47,225 INFO L87 Difference]: Start difference. First operand 4629 states and 5901 transitions. Second operand 6 states. [2020-10-28 12:04:50,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:50,022 INFO L93 Difference]: Finished difference Result 9225 states and 12836 transitions. [2020-10-28 12:04:50,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 12:04:50,023 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 283 [2020-10-28 12:04:50,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:50,062 INFO L225 Difference]: With dead ends: 9225 [2020-10-28 12:04:50,063 INFO L226 Difference]: Without dead ends: 6542 [2020-10-28 12:04:50,074 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:50,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6542 states. [2020-10-28 12:04:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6542 to 6463. [2020-10-28 12:04:50,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6463 states. [2020-10-28 12:04:50,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6463 states to 6463 states and 8279 transitions. [2020-10-28 12:04:50,266 INFO L78 Accepts]: Start accepts. Automaton has 6463 states and 8279 transitions. Word has length 283 [2020-10-28 12:04:50,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:50,267 INFO L481 AbstractCegarLoop]: Abstraction has 6463 states and 8279 transitions. [2020-10-28 12:04:50,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:04:50,267 INFO L276 IsEmpty]: Start isEmpty. Operand 6463 states and 8279 transitions. [2020-10-28 12:04:50,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-28 12:04:50,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:50,277 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:04:50,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:04:50,278 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:50,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:50,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1424747651, now seen corresponding path program 1 times [2020-10-28 12:04:50,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:50,280 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [82409219] [2020-10-28 12:04:50,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:50,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:50,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:52,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:52,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-28 12:04:52,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:04:52,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1702 [2020-10-28 12:04:52,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:52,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:04:52,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:52,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:52,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:04:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:52,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:52,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:52,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:04:52,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:52,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:04:52,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:52,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:52,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:04:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:52,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:04:52,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:52,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:04:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:52,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:52,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:52,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:04:52,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:52,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 12:04:52,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:52,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:52,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:04:52,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:04:52,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:04:52,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:52,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:04:52,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:52,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:52,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:04:52,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:04:52,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:04:52,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 12:04:52,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:04:52,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:04:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:04:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:04:52,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:04:52,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:04:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 202 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:04:52,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [82409219] [2020-10-28 12:04:52,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:04:52,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:04:52,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696750502] [2020-10-28 12:04:52,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:04:52,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:04:52,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:04:52,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:04:52,819 INFO L87 Difference]: Start difference. First operand 6463 states and 8279 transitions. Second operand 7 states. [2020-10-28 12:04:57,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:04:57,568 INFO L93 Difference]: Finished difference Result 15708 states and 20947 transitions. [2020-10-28 12:04:57,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:04:57,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 302 [2020-10-28 12:04:57,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:04:57,605 INFO L225 Difference]: With dead ends: 15708 [2020-10-28 12:04:57,606 INFO L226 Difference]: Without dead ends: 9629 [2020-10-28 12:04:57,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:04:57,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9629 states. [2020-10-28 12:04:57,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9629 to 9590. [2020-10-28 12:04:57,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9590 states. [2020-10-28 12:04:57,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9590 states to 9590 states and 12465 transitions. [2020-10-28 12:04:57,865 INFO L78 Accepts]: Start accepts. Automaton has 9590 states and 12465 transitions. Word has length 302 [2020-10-28 12:04:57,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:04:57,865 INFO L481 AbstractCegarLoop]: Abstraction has 9590 states and 12465 transitions. [2020-10-28 12:04:57,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:04:57,866 INFO L276 IsEmpty]: Start isEmpty. Operand 9590 states and 12465 transitions. [2020-10-28 12:04:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-10-28 12:04:57,880 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:04:57,881 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, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:04:57,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 12:04:57,881 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:04:57,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:04:57,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1736727427, now seen corresponding path program 1 times [2020-10-28 12:04:57,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:04:57,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810918380] [2020-10-28 12:04:57,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:04:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:04:58,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:58,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:58,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:58,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:04:59,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:00,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:03,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:03,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-28 12:05:03,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 12:05:03,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 12:05:03,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:03,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:03,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:03,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:05:03,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:05:03,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:03,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:03,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:03,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:03,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:03,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:03,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:05:03,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:03,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:03,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:03,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:03,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:03,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:03,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:03,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:03,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:03,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:03,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:03,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:03,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 12:05:03,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:03,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 124 [2020-10-28 12:05:03,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:05:03,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:03,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:05:03,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:03,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:03,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:03,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:05:03,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:03,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:05:03,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:03,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:03,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-28 12:05:03,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:03,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:03,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2020-10-28 12:05:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:03,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:03,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:03,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:05:03,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:05:03,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:03,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:05:03,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:03,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:03,598 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 126 proven. 4 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-10-28 12:05:03,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810918380] [2020-10-28 12:05:03,599 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:03,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:05:03,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101683247] [2020-10-28 12:05:03,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:05:03,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:03,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:05:03,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:05:03,602 INFO L87 Difference]: Start difference. First operand 9590 states and 12465 transitions. Second operand 5 states. [2020-10-28 12:05:06,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:06,172 INFO L93 Difference]: Finished difference Result 17721 states and 23192 transitions. [2020-10-28 12:05:06,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:05:06,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-10-28 12:05:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:06,204 INFO L225 Difference]: With dead ends: 17721 [2020-10-28 12:05:06,205 INFO L226 Difference]: Without dead ends: 8523 [2020-10-28 12:05:06,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:05:06,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8523 states. [2020-10-28 12:05:06,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8523 to 7939. [2020-10-28 12:05:06,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7939 states. [2020-10-28 12:05:06,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7939 states to 7939 states and 9739 transitions. [2020-10-28 12:05:06,409 INFO L78 Accepts]: Start accepts. Automaton has 7939 states and 9739 transitions. Word has length 334 [2020-10-28 12:05:06,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:06,409 INFO L481 AbstractCegarLoop]: Abstraction has 7939 states and 9739 transitions. [2020-10-28 12:05:06,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:05:06,410 INFO L276 IsEmpty]: Start isEmpty. Operand 7939 states and 9739 transitions. [2020-10-28 12:05:06,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-10-28 12:05:06,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:06,422 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:06,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 12:05:06,423 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:06,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:06,425 INFO L82 PathProgramCache]: Analyzing trace with hash -1171493027, now seen corresponding path program 1 times [2020-10-28 12:05:06,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:06,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279179405] [2020-10-28 12:05:06,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:06,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:06,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:06,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:06,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:07,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:07,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:07,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 354 [2020-10-28 12:05:07,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:05:07,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-10-28 12:05:07,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:07,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:07,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:07,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:05:07,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 297 [2020-10-28 12:05:07,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:07,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:07,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:07,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:07,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:07,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:07,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:05:07,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:07,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:07,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:05:07,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:07,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:07,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:07,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:07,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:07,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:07,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:07,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 12:05:07,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:07,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:07,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-28 12:05:07,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:07,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:05:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:07,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:07,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:07,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:07,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-28 12:05:07,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:07,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-28 12:05:07,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:07,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 153 [2020-10-28 12:05:07,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 12:05:07,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-28 12:05:08,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279179405] [2020-10-28 12:05:08,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:05:08,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:05:08,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647107068] [2020-10-28 12:05:08,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:05:08,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:08,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:05:08,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:05:08,088 INFO L87 Difference]: Start difference. First operand 7939 states and 9739 transitions. Second operand 6 states. [2020-10-28 12:05:09,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:09,812 INFO L93 Difference]: Finished difference Result 13928 states and 17173 transitions. [2020-10-28 12:05:09,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:05:09,813 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 340 [2020-10-28 12:05:09,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:09,834 INFO L225 Difference]: With dead ends: 13928 [2020-10-28 12:05:09,835 INFO L226 Difference]: Without dead ends: 7935 [2020-10-28 12:05:09,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:09,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7935 states. [2020-10-28 12:05:09,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7935 to 7917. [2020-10-28 12:05:09,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7917 states. [2020-10-28 12:05:10,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7917 states to 7917 states and 9683 transitions. [2020-10-28 12:05:10,004 INFO L78 Accepts]: Start accepts. Automaton has 7917 states and 9683 transitions. Word has length 340 [2020-10-28 12:05:10,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:10,005 INFO L481 AbstractCegarLoop]: Abstraction has 7917 states and 9683 transitions. [2020-10-28 12:05:10,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:05:10,005 INFO L276 IsEmpty]: Start isEmpty. Operand 7917 states and 9683 transitions. [2020-10-28 12:05:10,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2020-10-28 12:05:10,018 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:10,018 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:05:10,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 12:05:10,019 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:10,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:10,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1897512317, now seen corresponding path program 1 times [2020-10-28 12:05:10,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:10,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2052347085] [2020-10-28 12:05:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:10,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:10,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:11,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:11,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 355 [2020-10-28 12:05:11,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:11,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1435 [2020-10-28 12:05:11,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:11,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-28 12:05:11,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-28 12:05:11,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:11,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:11,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:11,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:11,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:11,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:11,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:11,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:05:11,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:11,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:11,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:11,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:11,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:11,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:11,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:11,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:05:11,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:11,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:05:11,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:11,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:11,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:11,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:11,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:11,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:11,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:05:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:11,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:12,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:12,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 12:05:12,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:12,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:05:12,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:12,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:12,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 12:05:12,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:12,137 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 85 proven. 2 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-28 12:05:12,138 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2052347085] [2020-10-28 12:05:12,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:12,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:05:12,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1462799815] [2020-10-28 12:05:12,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:05:12,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:12,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:05:12,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:05:12,139 INFO L87 Difference]: Start difference. First operand 7917 states and 9683 transitions. Second operand 5 states. [2020-10-28 12:05:14,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:14,886 INFO L93 Difference]: Finished difference Result 17016 states and 21183 transitions. [2020-10-28 12:05:14,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:05:14,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 341 [2020-10-28 12:05:14,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:14,916 INFO L225 Difference]: With dead ends: 17016 [2020-10-28 12:05:14,916 INFO L226 Difference]: Without dead ends: 9491 [2020-10-28 12:05:14,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:05:14,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9491 states. [2020-10-28 12:05:15,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9491 to 9459. [2020-10-28 12:05:15,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9459 states. [2020-10-28 12:05:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9459 states to 9459 states and 11552 transitions. [2020-10-28 12:05:15,108 INFO L78 Accepts]: Start accepts. Automaton has 9459 states and 11552 transitions. Word has length 341 [2020-10-28 12:05:15,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:15,108 INFO L481 AbstractCegarLoop]: Abstraction has 9459 states and 11552 transitions. [2020-10-28 12:05:15,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:05:15,109 INFO L276 IsEmpty]: Start isEmpty. Operand 9459 states and 11552 transitions. [2020-10-28 12:05:15,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-28 12:05:15,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:15,122 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-28 12:05:15,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 12:05:15,123 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:15,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:15,124 INFO L82 PathProgramCache]: Analyzing trace with hash 537547466, now seen corresponding path program 1 times [2020-10-28 12:05:15,124 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:15,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959661563] [2020-10-28 12:05:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:15,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:15,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:15,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:16,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:18,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:20,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:20,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-28 12:05:20,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:05:20,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 12:05:20,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:20,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:20,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-28 12:05:20,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 12:05:20,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:20,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:20,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:20,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:20,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:20,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:20,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:20,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:20,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:20,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:20,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:20,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:20,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:20,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:20,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:20,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:20,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:05:20,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:20,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 12:05:20,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:20,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:20,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:20,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:20,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-28 12:05:20,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:20,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:05:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:20,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:20,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:20,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 12:05:20,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 12:05:20,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:20,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:20,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:05:20,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:05:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:20,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:20,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:20,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:05:20,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:20,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:05:20,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:20,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:20,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 12:05:20,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:20,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 207 proven. 73 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-28 12:05:20,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959661563] [2020-10-28 12:05:20,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:20,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:20,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256661889] [2020-10-28 12:05:20,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:20,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:20,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:20,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:20,923 INFO L87 Difference]: Start difference. First operand 9459 states and 11552 transitions. Second operand 7 states. [2020-10-28 12:05:24,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:24,364 INFO L93 Difference]: Finished difference Result 20805 states and 26359 transitions. [2020-10-28 12:05:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:05:24,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-28 12:05:24,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:24,407 INFO L225 Difference]: With dead ends: 20805 [2020-10-28 12:05:24,407 INFO L226 Difference]: Without dead ends: 11740 [2020-10-28 12:05:24,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:05:24,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11740 states. [2020-10-28 12:05:24,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11740 to 11571. [2020-10-28 12:05:24,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11571 states. [2020-10-28 12:05:24,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11571 states to 11571 states and 14045 transitions. [2020-10-28 12:05:24,680 INFO L78 Accepts]: Start accepts. Automaton has 11571 states and 14045 transitions. Word has length 351 [2020-10-28 12:05:24,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:24,681 INFO L481 AbstractCegarLoop]: Abstraction has 11571 states and 14045 transitions. [2020-10-28 12:05:24,681 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:24,681 INFO L276 IsEmpty]: Start isEmpty. Operand 11571 states and 14045 transitions. [2020-10-28 12:05:24,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-28 12:05:24,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:24,700 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:24,700 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 12:05:24,701 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:24,701 INFO L82 PathProgramCache]: Analyzing trace with hash 1832515788, now seen corresponding path program 1 times [2020-10-28 12:05:24,701 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:24,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123035155] [2020-10-28 12:05:24,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:24,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:25,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:27,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:27,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-28 12:05:27,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:27,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2224 [2020-10-28 12:05:27,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:27,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:27,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 12:05:27,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 12:05:27,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:27,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:27,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:27,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:27,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:27,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:27,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:05:27,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:27,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:27,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:27,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:27,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:27,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:27,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:27,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:27,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:27,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:27,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 12:05:27,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:27,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:27,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 12:05:27,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:27,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:05:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:27,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:27,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:27,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:05:27,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 12:05:27,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:27,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:27,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:05:27,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:27,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2020-10-28 12:05:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:27,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:27,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:27,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:05:27,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:05:27,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:27,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-10-28 12:05:27,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:27,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:27,659 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 229 proven. 73 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-28 12:05:27,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123035155] [2020-10-28 12:05:27,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:27,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:27,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116129765] [2020-10-28 12:05:27,660 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:27,660 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:27,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:27,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:27,660 INFO L87 Difference]: Start difference. First operand 11571 states and 14045 transitions. Second operand 7 states. [2020-10-28 12:05:31,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:31,875 INFO L93 Difference]: Finished difference Result 22174 states and 26957 transitions. [2020-10-28 12:05:31,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:31,876 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 357 [2020-10-28 12:05:31,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:31,909 INFO L225 Difference]: With dead ends: 22174 [2020-10-28 12:05:31,909 INFO L226 Difference]: Without dead ends: 10997 [2020-10-28 12:05:31,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:05:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10997 states. [2020-10-28 12:05:32,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10997 to 10589. [2020-10-28 12:05:32,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10589 states. [2020-10-28 12:05:32,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10589 states to 10589 states and 12665 transitions. [2020-10-28 12:05:32,125 INFO L78 Accepts]: Start accepts. Automaton has 10589 states and 12665 transitions. Word has length 357 [2020-10-28 12:05:32,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:32,126 INFO L481 AbstractCegarLoop]: Abstraction has 10589 states and 12665 transitions. [2020-10-28 12:05:32,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 10589 states and 12665 transitions. [2020-10-28 12:05:32,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2020-10-28 12:05:32,145 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:32,146 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:32,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 12:05:32,146 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:32,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:32,147 INFO L82 PathProgramCache]: Analyzing trace with hash -840266154, now seen corresponding path program 1 times [2020-10-28 12:05:32,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:32,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931852874] [2020-10-28 12:05:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:32,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:32,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:32,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:33,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:34,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:34,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 403 [2020-10-28 12:05:34,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:34,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1787 [2020-10-28 12:05:34,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:34,023 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:05:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:05:34,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-28 12:05:34,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:34,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:34,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:34,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:34,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:34,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:34,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:34,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:34,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:34,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:34,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:34,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:34,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:34,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:34,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:05:34,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:34,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:05:34,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:34,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:34,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:34,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:34,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:05:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:34,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:34,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:34,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:34,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 12:05:34,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:34,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:34,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:05:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:34,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:05:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:34,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:34,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:34,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:34,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-28 12:05:34,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 12:05:34,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:34,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:34,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-28 12:05:34,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:34,688 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 260 proven. 43 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2020-10-28 12:05:34,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931852874] [2020-10-28 12:05:34,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:34,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:05:34,689 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942898282] [2020-10-28 12:05:34,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:05:34,690 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:34,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:05:34,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:05:34,691 INFO L87 Difference]: Start difference. First operand 10589 states and 12665 transitions. Second operand 6 states. [2020-10-28 12:05:37,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:37,584 INFO L93 Difference]: Finished difference Result 20236 states and 24516 transitions. [2020-10-28 12:05:37,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:05:37,585 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 387 [2020-10-28 12:05:37,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:37,622 INFO L225 Difference]: With dead ends: 20236 [2020-10-28 12:05:37,622 INFO L226 Difference]: Without dead ends: 12355 [2020-10-28 12:05:37,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:05:37,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12355 states. [2020-10-28 12:05:37,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12355 to 12133. [2020-10-28 12:05:37,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12133 states. [2020-10-28 12:05:37,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12133 states to 12133 states and 14431 transitions. [2020-10-28 12:05:37,984 INFO L78 Accepts]: Start accepts. Automaton has 12133 states and 14431 transitions. Word has length 387 [2020-10-28 12:05:37,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:37,985 INFO L481 AbstractCegarLoop]: Abstraction has 12133 states and 14431 transitions. [2020-10-28 12:05:37,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:05:37,985 INFO L276 IsEmpty]: Start isEmpty. Operand 12133 states and 14431 transitions. [2020-10-28 12:05:38,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-28 12:05:38,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:38,003 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:38,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 12:05:38,004 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:38,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:38,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1709268259, now seen corresponding path program 1 times [2020-10-28 12:05:38,005 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:38,005 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279562358] [2020-10-28 12:05:38,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:38,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:38,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:38,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:39,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:39,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:39,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 409 [2020-10-28 12:05:39,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:05:39,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1581 [2020-10-28 12:05:39,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:39,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-28 12:05:39,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:05:39,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:39,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:39,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:39,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:39,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:39,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:39,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:39,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:39,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:39,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:39,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:39,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:39,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:39,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:39,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:39,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:39,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:39,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:05:39,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:39,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:39,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:39,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:39,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:05:39,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:39,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:39,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:39,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-28 12:05:39,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 12:05:39,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:39,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:39,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-28 12:05:39,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:40,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-28 12:05:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:40,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:40,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:40,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:05:40,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:40,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 12:05:40,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:40,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:40,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:05:40,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:40,303 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 273 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-28 12:05:40,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279562358] [2020-10-28 12:05:40,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:40,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:40,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362573028] [2020-10-28 12:05:40,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:40,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:40,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:40,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:40,305 INFO L87 Difference]: Start difference. First operand 12133 states and 14431 transitions. Second operand 7 states. [2020-10-28 12:05:43,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:43,620 INFO L93 Difference]: Finished difference Result 21783 states and 26000 transitions. [2020-10-28 12:05:43,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:05:43,622 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-28 12:05:43,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:43,654 INFO L225 Difference]: With dead ends: 21783 [2020-10-28 12:05:43,655 INFO L226 Difference]: Without dead ends: 12164 [2020-10-28 12:05:43,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:05:43,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12164 states. [2020-10-28 12:05:43,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12164 to 12131. [2020-10-28 12:05:43,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12131 states. [2020-10-28 12:05:43,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12131 states to 12131 states and 14375 transitions. [2020-10-28 12:05:43,895 INFO L78 Accepts]: Start accepts. Automaton has 12131 states and 14375 transitions. Word has length 393 [2020-10-28 12:05:43,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:43,896 INFO L481 AbstractCegarLoop]: Abstraction has 12131 states and 14375 transitions. [2020-10-28 12:05:43,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:43,896 INFO L276 IsEmpty]: Start isEmpty. Operand 12131 states and 14375 transitions. [2020-10-28 12:05:43,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2020-10-28 12:05:43,910 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:43,912 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:43,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 12:05:43,913 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:43,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:43,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1451656766, now seen corresponding path program 1 times [2020-10-28 12:05:43,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:43,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [522834870] [2020-10-28 12:05:43,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:44,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:44,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:44,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:45,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:46,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:46,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 410 [2020-10-28 12:05:46,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:05:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2150 [2020-10-28 12:05:46,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:46,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-28 12:05:46,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:05:46,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:46,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:46,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:46,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:46,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:46,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:46,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:46,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:46,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:46,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:46,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:46,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:46,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:46,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:46,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:46,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 12:05:46,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:46,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:46,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:46,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:46,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:46,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 12:05:46,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:46,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:46,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:46,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-28 12:05:46,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:46,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 12:05:46,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:46,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:46,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:46,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-28 12:05:46,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:46,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-28 12:05:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:46,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:46,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:46,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:05:46,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-28 12:05:46,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:46,658 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:46,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:05:46,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 273 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-28 12:05:46,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [522834870] [2020-10-28 12:05:46,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:46,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:05:46,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127108795] [2020-10-28 12:05:46,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:05:46,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:46,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:05:46,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:05:46,934 INFO L87 Difference]: Start difference. First operand 12131 states and 14375 transitions. Second operand 8 states. [2020-10-28 12:05:51,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:51,609 INFO L93 Difference]: Finished difference Result 26189 states and 31400 transitions. [2020-10-28 12:05:51,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:05:51,610 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 394 [2020-10-28 12:05:51,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:51,644 INFO L225 Difference]: With dead ends: 26189 [2020-10-28 12:05:51,644 INFO L226 Difference]: Without dead ends: 14252 [2020-10-28 12:05:51,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 12:05:51,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14252 states. [2020-10-28 12:05:51,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14252 to 13467. [2020-10-28 12:05:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13467 states. [2020-10-28 12:05:51,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13467 states to 13467 states and 15967 transitions. [2020-10-28 12:05:51,907 INFO L78 Accepts]: Start accepts. Automaton has 13467 states and 15967 transitions. Word has length 394 [2020-10-28 12:05:51,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:51,907 INFO L481 AbstractCegarLoop]: Abstraction has 13467 states and 15967 transitions. [2020-10-28 12:05:51,907 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:05:51,907 INFO L276 IsEmpty]: Start isEmpty. Operand 13467 states and 15967 transitions. [2020-10-28 12:05:51,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-28 12:05:51,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:51,921 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:51,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 12:05:51,921 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:51,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:51,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1034897313, now seen corresponding path program 1 times [2020-10-28 12:05:51,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:51,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704706728] [2020-10-28 12:05:51,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:52,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:52,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-28 12:05:53,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:05:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1492 [2020-10-28 12:05:53,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-28 12:05:53,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:05:53,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:53,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:05:53,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:53,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:05:53,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:53,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:05:53,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:53,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:53,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:53,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:53,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:05:53,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:53,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:05:53,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:53,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 12:05:53,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:05:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:53,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:05:53,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:53,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:05:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:53,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:05:53,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:53,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-28 12:05:53,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:05:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:05:53,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-28 12:05:53,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:53,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:05:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:53,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:53,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:05:53,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:05:53,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:05:53,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 12:05:53,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:05:53,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:05:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:05:53,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:05:53,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:05:53,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:05:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 349 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-28 12:05:54,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704706728] [2020-10-28 12:05:54,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:05:54,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:05:54,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952019791] [2020-10-28 12:05:54,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:05:54,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:05:54,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:05:54,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:05:54,265 INFO L87 Difference]: Start difference. First operand 13467 states and 15967 transitions. Second operand 7 states. [2020-10-28 12:05:57,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:05:57,713 INFO L93 Difference]: Finished difference Result 24841 states and 29519 transitions. [2020-10-28 12:05:57,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:05:57,714 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 411 [2020-10-28 12:05:57,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:05:57,743 INFO L225 Difference]: With dead ends: 24841 [2020-10-28 12:05:57,743 INFO L226 Difference]: Without dead ends: 14262 [2020-10-28 12:05:57,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:05:57,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14262 states. [2020-10-28 12:05:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14262 to 14043. [2020-10-28 12:05:57,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14043 states. [2020-10-28 12:05:58,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14043 states to 14043 states and 16595 transitions. [2020-10-28 12:05:58,010 INFO L78 Accepts]: Start accepts. Automaton has 14043 states and 16595 transitions. Word has length 411 [2020-10-28 12:05:58,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:05:58,010 INFO L481 AbstractCegarLoop]: Abstraction has 14043 states and 16595 transitions. [2020-10-28 12:05:58,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:05:58,010 INFO L276 IsEmpty]: Start isEmpty. Operand 14043 states and 16595 transitions. [2020-10-28 12:05:58,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2020-10-28 12:05:58,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:05:58,024 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, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:05:58,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 12:05:58,024 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:05:58,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:05:58,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1129164107, now seen corresponding path program 1 times [2020-10-28 12:05:58,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:05:58,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2087925473] [2020-10-28 12:05:58,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:05:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:05:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:58,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:59,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:05:59,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:01,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:01,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-28 12:06:01,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:06:01,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3484 [2020-10-28 12:06:01,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:01,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:01,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:01,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 303 [2020-10-28 12:06:01,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:06:01,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:01,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:01,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:01,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:01,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:01,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:01,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:06:01,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:01,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:01,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:01,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:01,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:01,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:01,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:01,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-28 12:06:01,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 12:06:01,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:01,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:01,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:01,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:01,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-28 12:06:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:02,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:02,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:02,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 12:06:02,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 12:06:02,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:02,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:02,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-28 12:06:02,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:02,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2020-10-28 12:06:02,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:02,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:02,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:02,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:06:02,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-28 12:06:02,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:02,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:02,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:06:02,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 418 backedges. 273 proven. 2 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-10-28 12:06:02,357 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2087925473] [2020-10-28 12:06:02,357 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:02,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:02,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919074256] [2020-10-28 12:06:02,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:02,358 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:02,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:02,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:02,359 INFO L87 Difference]: Start difference. First operand 14043 states and 16595 transitions. Second operand 7 states. [2020-10-28 12:06:05,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:05,763 INFO L93 Difference]: Finished difference Result 28119 states and 33267 transitions. [2020-10-28 12:06:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:06:05,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 415 [2020-10-28 12:06:05,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:05,792 INFO L225 Difference]: With dead ends: 28119 [2020-10-28 12:06:05,792 INFO L226 Difference]: Without dead ends: 14460 [2020-10-28 12:06:05,812 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:06:05,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14460 states. [2020-10-28 12:06:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14460 to 14235. [2020-10-28 12:06:06,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14235 states. [2020-10-28 12:06:06,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14235 states to 14235 states and 16780 transitions. [2020-10-28 12:06:06,059 INFO L78 Accepts]: Start accepts. Automaton has 14235 states and 16780 transitions. Word has length 415 [2020-10-28 12:06:06,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:06,060 INFO L481 AbstractCegarLoop]: Abstraction has 14235 states and 16780 transitions. [2020-10-28 12:06:06,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:06,060 INFO L276 IsEmpty]: Start isEmpty. Operand 14235 states and 16780 transitions. [2020-10-28 12:06:06,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-28 12:06:06,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:06,076 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:06:06,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 12:06:06,077 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:06,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:06,077 INFO L82 PathProgramCache]: Analyzing trace with hash 1523008748, now seen corresponding path program 1 times [2020-10-28 12:06:06,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:06,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [558445732] [2020-10-28 12:06:06,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:06,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:06,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:07,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:08,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:10,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:11,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 475 [2020-10-28 12:06:11,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:06:11,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-28 12:06:11,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:11,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 347 [2020-10-28 12:06:11,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 12:06:11,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:11,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:11,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:11,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:11,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 12:06:11,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:11,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:06:11,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:11,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:11,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:11,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:11,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 12:06:11,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:11,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:11,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:11,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:11,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:06:11,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:11,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:11,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:06:11,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:11,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:06:11,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:11,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:11,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:11,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:11,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:11,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:06:11,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:11,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:11,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:11,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-28 12:06:11,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:11,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-28 12:06:11,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:11,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:06:11,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:11,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2020-10-28 12:06:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:11,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:12,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:12,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:06:12,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 12:06:12,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:12,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:12,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:12,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:12,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:06:12,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:12,519 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-28 12:06:12,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [558445732] [2020-10-28 12:06:12,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:12,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:12,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85342978] [2020-10-28 12:06:12,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:12,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:12,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:12,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:12,521 INFO L87 Difference]: Start difference. First operand 14235 states and 16780 transitions. Second operand 7 states. [2020-10-28 12:06:15,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:15,639 INFO L93 Difference]: Finished difference Result 26560 states and 31420 transitions. [2020-10-28 12:06:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:06:15,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 457 [2020-10-28 12:06:15,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:15,661 INFO L225 Difference]: With dead ends: 26560 [2020-10-28 12:06:15,661 INFO L226 Difference]: Without dead ends: 13873 [2020-10-28 12:06:15,677 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:06:15,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13873 states. [2020-10-28 12:06:15,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13873 to 13649. [2020-10-28 12:06:15,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13649 states. [2020-10-28 12:06:15,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13649 states to 13649 states and 15973 transitions. [2020-10-28 12:06:15,901 INFO L78 Accepts]: Start accepts. Automaton has 13649 states and 15973 transitions. Word has length 457 [2020-10-28 12:06:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:15,901 INFO L481 AbstractCegarLoop]: Abstraction has 13649 states and 15973 transitions. [2020-10-28 12:06:15,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:15,901 INFO L276 IsEmpty]: Start isEmpty. Operand 13649 states and 15973 transitions. [2020-10-28 12:06:15,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-10-28 12:06:15,916 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:15,917 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:06:15,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 12:06:15,917 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:15,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:15,918 INFO L82 PathProgramCache]: Analyzing trace with hash 1460301918, now seen corresponding path program 1 times [2020-10-28 12:06:15,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:15,918 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1308508816] [2020-10-28 12:06:15,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:16,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:16,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:16,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:19,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:20,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:21,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:21,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 491 [2020-10-28 12:06:21,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:06:21,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 12:06:21,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:21,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-28 12:06:21,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:06:21,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:21,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:21,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:21,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:21,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:21,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:21,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:06:21,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:21,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:21,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:21,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:21,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:21,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:21,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:21,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:21,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:21,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:21,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 12:06:21,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:21,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:21,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:21,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:21,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:21,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:21,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:21,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:06:21,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:21,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:06:21,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:21,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:21,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:21,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:21,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:06:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:21,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:21,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:21,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:21,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:06:21,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:06:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:06:21,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:21,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:06:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:21,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:06:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:21,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:21,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:21,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 12:06:21,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:21,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-28 12:06:21,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:21,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:21,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:21,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 12:06:21,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 688 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 12:06:21,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1308508816] [2020-10-28 12:06:21,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:21,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:21,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794860451] [2020-10-28 12:06:21,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:21,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:21,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:21,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:21,788 INFO L87 Difference]: Start difference. First operand 13649 states and 15973 transitions. Second operand 7 states. [2020-10-28 12:06:26,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:26,248 INFO L93 Difference]: Finished difference Result 26327 states and 30936 transitions. [2020-10-28 12:06:26,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:06:26,251 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 473 [2020-10-28 12:06:26,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:26,283 INFO L225 Difference]: With dead ends: 26327 [2020-10-28 12:06:26,283 INFO L226 Difference]: Without dead ends: 14414 [2020-10-28 12:06:26,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 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 12:06:26,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14414 states. [2020-10-28 12:06:26,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14414 to 14192. [2020-10-28 12:06:26,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14192 states. [2020-10-28 12:06:26,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14192 states to 14192 states and 16290 transitions. [2020-10-28 12:06:26,547 INFO L78 Accepts]: Start accepts. Automaton has 14192 states and 16290 transitions. Word has length 473 [2020-10-28 12:06:26,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:26,547 INFO L481 AbstractCegarLoop]: Abstraction has 14192 states and 16290 transitions. [2020-10-28 12:06:26,547 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:26,547 INFO L276 IsEmpty]: Start isEmpty. Operand 14192 states and 16290 transitions. [2020-10-28 12:06:26,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 497 [2020-10-28 12:06:26,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:26,560 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:06:26,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 12:06:26,561 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:26,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:26,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1372530951, now seen corresponding path program 1 times [2020-10-28 12:06:26,561 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:26,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035103429] [2020-10-28 12:06:26,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:26,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:26,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:26,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:28,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:31,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 514 [2020-10-28 12:06:31,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:06:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4779 [2020-10-28 12:06:31,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:31,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 346 [2020-10-28 12:06:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:06:31,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:31,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:31,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:31,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:31,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:31,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:06:31,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:31,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:31,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:31,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:31,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:31,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:31,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-28 12:06:31,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:31,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:06:31,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:31,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:31,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:31,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:31,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:31,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 12:06:31,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:31,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:31,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-28 12:06:31,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 12:06:31,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:31,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:31,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:31,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:31,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 12:06:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:31,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:31,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 12:06:31,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:06:31,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:31,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 12:06:31,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:31,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2020-10-28 12:06:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:31,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:31,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:31,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:06:31,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 12:06:31,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:31,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:06:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:32,036 INFO L134 CoverageAnalysis]: Checked inductivity of 763 backedges. 478 proven. 2 refuted. 0 times theorem prover too weak. 283 trivial. 0 not checked. [2020-10-28 12:06:32,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035103429] [2020-10-28 12:06:32,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:32,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:32,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149443393] [2020-10-28 12:06:32,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:32,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:32,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:32,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:32,038 INFO L87 Difference]: Start difference. First operand 14192 states and 16290 transitions. Second operand 7 states. [2020-10-28 12:06:35,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:35,802 INFO L93 Difference]: Finished difference Result 27715 states and 32278 transitions. [2020-10-28 12:06:35,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:06:35,804 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 496 [2020-10-28 12:06:35,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:35,827 INFO L225 Difference]: With dead ends: 27715 [2020-10-28 12:06:35,828 INFO L226 Difference]: Without dead ends: 15263 [2020-10-28 12:06:35,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:06:35,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15263 states. [2020-10-28 12:06:36,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15263 to 14547. [2020-10-28 12:06:36,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14547 states. [2020-10-28 12:06:36,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14547 states to 14547 states and 16571 transitions. [2020-10-28 12:06:36,057 INFO L78 Accepts]: Start accepts. Automaton has 14547 states and 16571 transitions. Word has length 496 [2020-10-28 12:06:36,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:36,057 INFO L481 AbstractCegarLoop]: Abstraction has 14547 states and 16571 transitions. [2020-10-28 12:06:36,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:36,057 INFO L276 IsEmpty]: Start isEmpty. Operand 14547 states and 16571 transitions. [2020-10-28 12:06:36,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2020-10-28 12:06:36,066 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:36,067 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 12:06:36,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 12:06:36,067 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:36,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:36,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1305173531, now seen corresponding path program 1 times [2020-10-28 12:06:36,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:36,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1989428125] [2020-10-28 12:06:36,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:36,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:36,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:36,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:37,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:39,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:41,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:41,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-28 12:06:41,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:06:41,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 12:06:41,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:41,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 362 [2020-10-28 12:06:41,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:06:41,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:41,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:41,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:41,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:41,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:41,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:41,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 12:06:41,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:41,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:41,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:41,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:41,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:41,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:41,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:41,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:41,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:41,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:41,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:06:41,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:41,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:41,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:41,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:41,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:41,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:41,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:41,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:41,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:06:41,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:06:41,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:41,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:41,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:41,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:41,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:41,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:06:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:41,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:41,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-28 12:06:41,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:41,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 12:06:41,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:41,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:41,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:06:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:41,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:06:41,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:41,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 356 [2020-10-28 12:06:41,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:41,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:41,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:06:41,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:41,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-28 12:06:41,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:41,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:41,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:06:41,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:42,160 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 479 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 12:06:42,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1989428125] [2020-10-28 12:06:42,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:42,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:06:42,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666992708] [2020-10-28 12:06:42,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:06:42,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:42,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:06:42,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:06:42,162 INFO L87 Difference]: Start difference. First operand 14547 states and 16571 transitions. Second operand 7 states. [2020-10-28 12:06:45,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:45,253 INFO L93 Difference]: Finished difference Result 26241 states and 29924 transitions. [2020-10-28 12:06:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:06:45,254 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 512 [2020-10-28 12:06:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:45,278 INFO L225 Difference]: With dead ends: 26241 [2020-10-28 12:06:45,278 INFO L226 Difference]: Without dead ends: 14582 [2020-10-28 12:06:45,290 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:06:45,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14582 states. [2020-10-28 12:06:45,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14582 to 14547. [2020-10-28 12:06:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14547 states. [2020-10-28 12:06:45,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14547 states to 14547 states and 16538 transitions. [2020-10-28 12:06:45,510 INFO L78 Accepts]: Start accepts. Automaton has 14547 states and 16538 transitions. Word has length 512 [2020-10-28 12:06:45,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:45,510 INFO L481 AbstractCegarLoop]: Abstraction has 14547 states and 16538 transitions. [2020-10-28 12:06:45,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:06:45,510 INFO L276 IsEmpty]: Start isEmpty. Operand 14547 states and 16538 transitions. [2020-10-28 12:06:45,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 514 [2020-10-28 12:06:45,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:45,524 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 12:06:45,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 12:06:45,524 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:45,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:45,525 INFO L82 PathProgramCache]: Analyzing trace with hash -377941623, now seen corresponding path program 1 times [2020-10-28 12:06:45,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:45,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [22409783] [2020-10-28 12:06:45,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:45,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:45,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:46,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:46,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:49,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 531 [2020-10-28 12:06:50,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 12:06:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 12:06:50,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:50,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:06:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 361 [2020-10-28 12:06:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-28 12:06:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:50,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:06:50,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:50,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:50,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:06:50,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:06:50,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:50,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:50,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:50,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:50,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:50,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:50,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:06:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:50,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:06:50,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 12:06:50,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:50,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:50,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:50,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:06:50,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:50,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:50,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:50,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:06:50,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:50,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 12:06:50,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:50,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:06:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:06:50,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:50,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:06:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:50,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:51,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:51,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:06:51,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:51,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 12:06:51,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:51,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:51,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 12:06:51,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:06:51,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 12:06:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:51,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:06:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:51,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:51,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:06:51,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:06:51,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:06:51,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 12:06:51,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:06:51,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:06:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:06:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:06:51,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:06:51,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:06:51,418 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 479 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 12:06:51,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [22409783] [2020-10-28 12:06:51,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:06:51,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 12:06:51,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387225437] [2020-10-28 12:06:51,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 12:06:51,419 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:06:51,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 12:06:51,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:06:51,419 INFO L87 Difference]: Start difference. First operand 14547 states and 16538 transitions. Second operand 8 states. [2020-10-28 12:06:55,062 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 71 [2020-10-28 12:06:55,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:06:55,914 INFO L93 Difference]: Finished difference Result 29102 states and 33100 transitions. [2020-10-28 12:06:55,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 12:06:55,916 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 513 [2020-10-28 12:06:55,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:06:55,939 INFO L225 Difference]: With dead ends: 29102 [2020-10-28 12:06:55,940 INFO L226 Difference]: Without dead ends: 14939 [2020-10-28 12:06:55,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-28 12:06:55,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14939 states. [2020-10-28 12:06:56,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14939 to 14339. [2020-10-28 12:06:56,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14339 states. [2020-10-28 12:06:56,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14339 states to 14339 states and 16163 transitions. [2020-10-28 12:06:56,153 INFO L78 Accepts]: Start accepts. Automaton has 14339 states and 16163 transitions. Word has length 513 [2020-10-28 12:06:56,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:06:56,153 INFO L481 AbstractCegarLoop]: Abstraction has 14339 states and 16163 transitions. [2020-10-28 12:06:56,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 12:06:56,154 INFO L276 IsEmpty]: Start isEmpty. Operand 14339 states and 16163 transitions. [2020-10-28 12:06:56,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-10-28 12:06:56,166 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:06:56,167 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 12:06:56,167 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 12:06:56,167 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:06:56,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:06:56,168 INFO L82 PathProgramCache]: Analyzing trace with hash 1515521270, now seen corresponding path program 1 times [2020-10-28 12:06:56,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:06:56,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [625289068] [2020-10-28 12:06:56,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:06:56,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:06:56,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:56,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:06:59,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 563 [2020-10-28 12:07:01,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:01,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 12:07:01,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:01,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 394 [2020-10-28 12:07:01,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 12:07:01,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:01,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:01,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:07:01,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:01,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:01,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:07:01,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:07:01,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:01,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:01,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:07:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:07:01,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 12:07:01,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:01,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:01,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:07:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-28 12:07:01,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 12:07:01,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:01,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 12:07:01,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:01,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 389 [2020-10-28 12:07:01,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:01,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:01,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:01,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:07:01,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:01,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 12:07:01,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:01,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:01,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:01,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:01,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 12:07:01,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:02,236 INFO L134 CoverageAnalysis]: Checked inductivity of 776 backedges. 479 proven. 2 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2020-10-28 12:07:02,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [625289068] [2020-10-28 12:07:02,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:02,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:02,236 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555741638] [2020-10-28 12:07:02,237 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:02,237 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:02,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:02,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:02,238 INFO L87 Difference]: Start difference. First operand 14339 states and 16163 transitions. Second operand 7 states. [2020-10-28 12:07:05,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:05,812 INFO L93 Difference]: Finished difference Result 26785 states and 30030 transitions. [2020-10-28 12:07:05,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:07:05,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 545 [2020-10-28 12:07:05,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:05,830 INFO L225 Difference]: With dead ends: 26785 [2020-10-28 12:07:05,831 INFO L226 Difference]: Without dead ends: 12642 [2020-10-28 12:07:05,844 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:07:05,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12642 states. [2020-10-28 12:07:06,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12642 to 12599. [2020-10-28 12:07:06,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12599 states. [2020-10-28 12:07:06,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12599 states to 12599 states and 13794 transitions. [2020-10-28 12:07:06,110 INFO L78 Accepts]: Start accepts. Automaton has 12599 states and 13794 transitions. Word has length 545 [2020-10-28 12:07:06,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:06,111 INFO L481 AbstractCegarLoop]: Abstraction has 12599 states and 13794 transitions. [2020-10-28 12:07:06,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:07:06,111 INFO L276 IsEmpty]: Start isEmpty. Operand 12599 states and 13794 transitions. [2020-10-28 12:07:06,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2020-10-28 12:07:06,130 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:06,130 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:06,130 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 12:07:06,130 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:06,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:06,131 INFO L82 PathProgramCache]: Analyzing trace with hash -644416925, now seen corresponding path program 1 times [2020-10-28 12:07:06,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:06,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588995247] [2020-10-28 12:07:06,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:06,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:06,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:06,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:11,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:11,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 744 [2020-10-28 12:07:11,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5096 [2020-10-28 12:07:11,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:11,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 12:07:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:07:11,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 461 [2020-10-28 12:07:11,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:11,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:11,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:11,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:11,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:11,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:11,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:07:11,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:11,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:11,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:07:11,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:11,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:11,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:11,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:11,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:11,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:07:11,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:11,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 12:07:11,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:11,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:11,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:11,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:11,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-28 12:07:11,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:11,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:07:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:11,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:11,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:12,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:07:12,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:12,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-28 12:07:12,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:12,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 12:07:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:12,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:07:12,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-28 12:07:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:12,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:12,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:12,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:12,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:12,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:07:12,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:12,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 522 [2020-10-28 12:07:12,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:12,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:12,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 12:07:12,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:12,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-28 12:07:12,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:12,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:12,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:12,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:07:12,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:12,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-28 12:07:12,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:12,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:12,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:12,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:12,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 12:07:12,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:12,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 459 [2020-10-28 12:07:12,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:12,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:12,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:07:12,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:12,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 12:07:12,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:12,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:12,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 12:07:12,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:12,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:12,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 566 [2020-10-28 12:07:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:13,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:13,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:13,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:07:13,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:13,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:07:13,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:13,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-28 12:07:13,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:13,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:13,666 INFO L134 CoverageAnalysis]: Checked inductivity of 1753 backedges. 651 proven. 873 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2020-10-28 12:07:13,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588995247] [2020-10-28 12:07:13,666 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:13,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 12:07:13,667 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832909493] [2020-10-28 12:07:13,667 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 12:07:13,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:13,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 12:07:13,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:07:13,668 INFO L87 Difference]: Start difference. First operand 12599 states and 13794 transitions. Second operand 11 states. [2020-10-28 12:07:13,867 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-28 12:07:18,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:07:18,615 INFO L93 Difference]: Finished difference Result 24225 states and 26760 transitions. [2020-10-28 12:07:18,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 12:07:18,616 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 722 [2020-10-28 12:07:18,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:07:18,639 INFO L225 Difference]: With dead ends: 24225 [2020-10-28 12:07:18,639 INFO L226 Difference]: Without dead ends: 14132 [2020-10-28 12:07:18,650 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=116, Invalid=346, Unknown=0, NotChecked=0, Total=462 [2020-10-28 12:07:18,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14132 states. [2020-10-28 12:07:18,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14132 to 13577. [2020-10-28 12:07:18,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13577 states. [2020-10-28 12:07:18,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13577 states to 13577 states and 14795 transitions. [2020-10-28 12:07:18,844 INFO L78 Accepts]: Start accepts. Automaton has 13577 states and 14795 transitions. Word has length 722 [2020-10-28 12:07:18,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:07:18,845 INFO L481 AbstractCegarLoop]: Abstraction has 13577 states and 14795 transitions. [2020-10-28 12:07:18,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 12:07:18,845 INFO L276 IsEmpty]: Start isEmpty. Operand 13577 states and 14795 transitions. [2020-10-28 12:07:18,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 824 [2020-10-28 12:07:18,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:07:18,867 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, 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, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:07:18,867 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 12:07:18,868 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:07:18,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:07:18,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1192326755, now seen corresponding path program 1 times [2020-10-28 12:07:18,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:07:18,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110244134] [2020-10-28 12:07:18,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:07:18,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:19,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:19,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 847 [2020-10-28 12:07:23,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:07:23,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4451 [2020-10-28 12:07:23,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-28 12:07:23,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:07:23,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:07:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:23,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:07:23,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:23,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 12:07:23,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:23,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:23,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:07:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:23,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-28 12:07:23,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:23,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 12:07:23,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:23,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:23,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:23,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 12:07:23,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 12:07:23,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 12:07:23,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:07:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:07:23,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 12:07:23,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-28 12:07:23,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:23,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:07:23,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:23,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-28 12:07:23,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:07:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:07:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:07:23,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2020-10-28 12:07:23,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:23,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:23,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:23,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-28 12:07:23,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:23,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-28 12:07:23,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:23,963 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:23,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:23,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-28 12:07:23,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:23,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:23,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 458 [2020-10-28 12:07:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:24,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:24,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:24,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-28 12:07:24,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:24,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 12:07:24,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:24,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-28 12:07:24,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:24,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:24,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 560 [2020-10-28 12:07:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:24,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:24,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:24,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:07:24,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:24,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 12:07:24,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:24,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:24,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:24,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 12:07:24,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:24,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:24,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 667 [2020-10-28 12:07:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:07:24,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:07:24,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:07:24,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-28 12:07:24,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:07:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 12:07:24,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:07:24,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:07:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:07:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-28 12:07:24,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:07:24,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:07:24,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2385 backedges. 497 proven. 334 refuted. 0 times theorem prover too weak. 1554 trivial. 0 not checked. [2020-10-28 12:07:24,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110244134] [2020-10-28 12:07:24,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:07:24,598 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:07:24,598 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777117218] [2020-10-28 12:07:24,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:07:24,599 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:07:24,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:07:24,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:07:24,600 INFO L87 Difference]: Start difference. First operand 13577 states and 14795 transitions. Second operand 7 states.