/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/Problem03_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:16:00,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:16:00,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:16:00,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:16:00,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:16:00,892 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:16:00,893 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:16:00,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:16:00,902 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:16:00,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:16:00,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:16:00,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:16:00,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:16:00,919 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:16:00,922 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:16:00,924 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:16:00,925 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:16:00,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:16:00,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:16:00,945 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:16:00,947 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:16:00,949 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:16:00,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:16:00,953 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:16:00,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:16:00,986 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:16:00,986 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:16:00,991 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:16:00,991 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:16:00,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:16:00,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:16:01,004 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:16:01,009 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:16:01,010 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:16:01,013 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:16:01,014 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:16:01,016 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:16:01,016 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:16:01,016 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:16:01,020 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:16:01,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:16:01,029 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 10:16:01,085 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:16:01,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:16:01,090 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:16:01,090 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:16:01,090 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:16:01,090 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:16:01,091 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:16:01,091 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:16:01,091 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:16:01,091 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:16:01,092 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:16:01,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:16:01,093 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:16:01,093 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:16:01,093 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:16:01,093 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:16:01,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:16:01,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:16:01,094 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:16:01,094 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:16:01,094 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:16:01,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:16:01,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:16:01,095 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:16:01,095 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:16:01,095 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:16:01,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:16:01,096 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:16:01,096 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:16:01,096 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:16:01,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:16:01,541 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:16:01,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:16:01,546 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:16:01,547 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:16:01,548 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label28.c [2020-10-28 10:16:01,640 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c450ae1d/0816bc904e7044b4b400a77f628a4c01/FLAG0a5a94466 [2020-10-28 10:16:02,510 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:16:02,511 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label28.c [2020-10-28 10:16:02,541 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c450ae1d/0816bc904e7044b4b400a77f628a4c01/FLAG0a5a94466 [2020-10-28 10:16:02,559 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8c450ae1d/0816bc904e7044b4b400a77f628a4c01 [2020-10-28 10:16:02,562 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:16:02,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:16:02,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:16:02,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:16:02,577 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:16:02,578 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:16:02" (1/1) ... [2020-10-28 10:16:02,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@85a5980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:16:02, skipping insertion in model container [2020-10-28 10:16:02,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:16:02" (1/1) ... [2020-10-28 10:16:02,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:16:02,668 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:16:03,452 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:16:03,480 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:16:03,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:16:03,927 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:16:03,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:16:03 WrapperNode [2020-10-28 10:16:03,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:16:03,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:16:03,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:16:03,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:16:03,945 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:16:03" (1/1) ... [2020-10-28 10:16:03,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:16:03" (1/1) ... [2020-10-28 10:16:04,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:16:03" (1/1) ... [2020-10-28 10:16:04,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:16:03" (1/1) ... [2020-10-28 10:16:04,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:16:03" (1/1) ... [2020-10-28 10:16:04,157 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:16:03" (1/1) ... [2020-10-28 10:16:04,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:16:03" (1/1) ... [2020-10-28 10:16:04,210 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:16:04,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:16:04,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:16:04,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:16:04,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:16:03" (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 10:16:04,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:16:04,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:16:04,299 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:16:04,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:16:04,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:16:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:16:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:16:04,300 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:16:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:16:04,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:16:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:16:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:16:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:16:04,302 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:16:04,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:16:04,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:16:04,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:16:04,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:16:04,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:16:07,011 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:16:07,011 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:16:07,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:16:07 BoogieIcfgContainer [2020-10-28 10:16:07,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:16:07,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:16:07,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:16:07,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:16:07,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:16:02" (1/3) ... [2020-10-28 10:16:07,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749fb267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:16:07, skipping insertion in model container [2020-10-28 10:16:07,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:16:03" (2/3) ... [2020-10-28 10:16:07,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@749fb267 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:16:07, skipping insertion in model container [2020-10-28 10:16:07,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:16:07" (3/3) ... [2020-10-28 10:16:07,033 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label28.c [2020-10-28 10:16:07,046 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:16:07,056 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:16:07,071 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:16:07,117 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:16:07,117 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:16:07,117 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:16:07,117 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:16:07,117 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:16:07,118 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:16:07,118 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:16:07,118 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:16:07,157 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-28 10:16:07,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-28 10:16:07,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:16:07,186 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:07,187 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:16:07,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:16:07,196 INFO L82 PathProgramCache]: Analyzing trace with hash -1540663388, now seen corresponding path program 1 times [2020-10-28 10:16:07,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:16:07,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1092882836] [2020-10-28 10:16:07,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:16:07,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:07,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:08,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:11,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:11,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-28 10:16:11,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:16:11,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3929 [2020-10-28 10:16:11,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:11,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:16:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:16:11,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-28 10:16:11,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:16:12,170 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:16:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:16:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:12,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:12,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:16:12,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:12,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 10:16:12,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:12,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:12,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:16:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:16:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:16:12,335 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 10:16:12,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1092882836] [2020-10-28 10:16:12,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:16:12,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:16:12,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778884704] [2020-10-28 10:16:12,346 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:16:12,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:16:12,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:16:12,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:16:12,369 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-28 10:16:12,706 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:16:16,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:16:16,023 INFO L93 Difference]: Finished difference Result 844 states and 1491 transitions. [2020-10-28 10:16:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:16:16,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 159 [2020-10-28 10:16:16,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:16:16,046 INFO L225 Difference]: With dead ends: 844 [2020-10-28 10:16:16,046 INFO L226 Difference]: Without dead ends: 465 [2020-10-28 10:16:16,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:16:16,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2020-10-28 10:16:16,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 461. [2020-10-28 10:16:16,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 461 states. [2020-10-28 10:16:16,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 652 transitions. [2020-10-28 10:16:16,162 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 652 transitions. Word has length 159 [2020-10-28 10:16:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:16:16,164 INFO L481 AbstractCegarLoop]: Abstraction has 461 states and 652 transitions. [2020-10-28 10:16:16,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:16:16,164 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 652 transitions. [2020-10-28 10:16:16,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-28 10:16:16,172 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:16:16,172 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:16,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:16:16,173 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:16:16,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:16:16,174 INFO L82 PathProgramCache]: Analyzing trace with hash -1599323803, now seen corresponding path program 1 times [2020-10-28 10:16:16,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:16:16,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129142762] [2020-10-28 10:16:16,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:16:16,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:16,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:16,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:18,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:18,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-28 10:16:18,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:16:18,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2369 [2020-10-28 10:16:18,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:18,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:18,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:16:18,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 10:16:18,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 10:16:18,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:16:19,010 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:16:19,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:16:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:19,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:19,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:19,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:16:19,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:19,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:16:19,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:19,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:19,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:16:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:19,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:16:19,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:16:19,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:16:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:19,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:19,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:19,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:16:19,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:19,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 10:16:19,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:19,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:16:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 10:16:19,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:16:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:16:19,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129142762] [2020-10-28 10:16:19,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:16:19,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:16:19,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233427411] [2020-10-28 10:16:19,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:16:19,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:16:19,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:16:19,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:16:19,258 INFO L87 Difference]: Start difference. First operand 461 states and 652 transitions. Second operand 5 states. [2020-10-28 10:16:19,610 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:16:22,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:16:22,877 INFO L93 Difference]: Finished difference Result 1352 states and 1930 transitions. [2020-10-28 10:16:22,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:16:22,881 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 171 [2020-10-28 10:16:22,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:16:22,893 INFO L225 Difference]: With dead ends: 1352 [2020-10-28 10:16:22,893 INFO L226 Difference]: Without dead ends: 897 [2020-10-28 10:16:22,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:16:22,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 897 states. [2020-10-28 10:16:22,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 897 to 892. [2020-10-28 10:16:22,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-10-28 10:16:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1188 transitions. [2020-10-28 10:16:22,954 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1188 transitions. Word has length 171 [2020-10-28 10:16:22,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:16:22,955 INFO L481 AbstractCegarLoop]: Abstraction has 892 states and 1188 transitions. [2020-10-28 10:16:22,955 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:16:22,955 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1188 transitions. [2020-10-28 10:16:22,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-28 10:16:22,960 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:16:22,960 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:22,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:16:22,961 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:16:22,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:16:22,961 INFO L82 PathProgramCache]: Analyzing trace with hash 278400635, now seen corresponding path program 1 times [2020-10-28 10:16:22,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:16:22,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935709798] [2020-10-28 10:16:22,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:16:23,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:23,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:23,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:24,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:24,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:28,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:28,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-10-28 10:16:28,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:16:28,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 10:16:28,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:28,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:16:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 10:16:28,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 10:16:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:16:28,434 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:16:28,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:16:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:28,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:28,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:28,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:16:28,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:28,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:16:28,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:28,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:16:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:28,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:16:28,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:16:28,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:16:28,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:28,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:28,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:28,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:16:28,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:28,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:16:28,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:28,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:16:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:28,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:16:28,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:16:28,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:16:28,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:28,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:28,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:28,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:16:28,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:16:28,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:28,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:16:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 10:16:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:16:28,699 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 10:16:28,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935709798] [2020-10-28 10:16:28,699 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:16:28,700 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:16:28,700 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416410181] [2020-10-28 10:16:28,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:16:28,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:16:28,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:16:28,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:16:28,709 INFO L87 Difference]: Start difference. First operand 892 states and 1188 transitions. Second operand 5 states. [2020-10-28 10:16:29,208 WARN L193 SmtUtils]: Spent 308.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:16:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:16:32,647 INFO L93 Difference]: Finished difference Result 2204 states and 3045 transitions. [2020-10-28 10:16:32,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:16:32,651 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 181 [2020-10-28 10:16:32,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:16:32,660 INFO L225 Difference]: With dead ends: 2204 [2020-10-28 10:16:32,660 INFO L226 Difference]: Without dead ends: 1318 [2020-10-28 10:16:32,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:16:32,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2020-10-28 10:16:32,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1311. [2020-10-28 10:16:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-28 10:16:32,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1791 transitions. [2020-10-28 10:16:32,720 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1791 transitions. Word has length 181 [2020-10-28 10:16:32,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:16:32,721 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1791 transitions. [2020-10-28 10:16:32,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:16:32,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1791 transitions. [2020-10-28 10:16:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-10-28 10:16:32,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:16:32,727 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:32,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:16:32,728 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:16:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:16:32,729 INFO L82 PathProgramCache]: Analyzing trace with hash -2061072854, now seen corresponding path program 1 times [2020-10-28 10:16:32,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:16:32,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1730253007] [2020-10-28 10:16:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:16:32,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:32,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:32,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:34,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:37,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:37,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 10:16:37,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:16:37,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4903 [2020-10-28 10:16:37,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:37,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:37,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:16:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 10:16:37,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 10:16:37,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:16:38,131 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:16:38,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:16:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:38,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:38,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:16:38,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:38,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:16:38,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:38,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:16:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:38,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:16:38,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:16:38,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:16:38,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:38,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:38,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:38,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:16:38,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:38,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:16:38,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:38,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:16:38,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:38,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:16:38,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:16:38,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:16:38,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:38,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:38,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:38,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 10:16:38,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:38,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:16:38,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:38,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:16:38,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:38,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 10:16:38,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:16:38,476 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 21 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 10:16:38,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1730253007] [2020-10-28 10:16:38,477 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:16:38,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:16:38,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381010332] [2020-10-28 10:16:38,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:16:38,478 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:16:38,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:16:38,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:16:38,479 INFO L87 Difference]: Start difference. First operand 1311 states and 1791 transitions. Second operand 5 states. [2020-10-28 10:16:38,904 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:16:42,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:16:42,405 INFO L93 Difference]: Finished difference Result 3894 states and 5421 transitions. [2020-10-28 10:16:42,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:16:42,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-10-28 10:16:42,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:16:42,423 INFO L225 Difference]: With dead ends: 3894 [2020-10-28 10:16:42,423 INFO L226 Difference]: Without dead ends: 2589 [2020-10-28 10:16:42,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:16:42,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2589 states. [2020-10-28 10:16:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2589 to 2569. [2020-10-28 10:16:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2569 states. [2020-10-28 10:16:42,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2569 states to 2569 states and 3507 transitions. [2020-10-28 10:16:42,525 INFO L78 Accepts]: Start accepts. Automaton has 2569 states and 3507 transitions. Word has length 185 [2020-10-28 10:16:42,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:16:42,526 INFO L481 AbstractCegarLoop]: Abstraction has 2569 states and 3507 transitions. [2020-10-28 10:16:42,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:16:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2569 states and 3507 transitions. [2020-10-28 10:16:42,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 10:16:42,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:16:42,535 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:42,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:16:42,536 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:16:42,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:16:42,537 INFO L82 PathProgramCache]: Analyzing trace with hash -1555874659, now seen corresponding path program 1 times [2020-10-28 10:16:42,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:16:42,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719093389] [2020-10-28 10:16:42,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:16:42,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:42,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:42,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:42,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:47,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:47,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-28 10:16:47,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:16:47,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-28 10:16:47,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:47,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:16:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-10-28 10:16:47,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 10:16:47,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:16:47,854 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:16:47,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:16:47,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:47,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:47,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:47,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:16:47,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:47,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:16:47,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:47,871 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:16:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:47,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:16:47,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:16:47,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:16:47,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:47,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:47,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:47,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:16:47,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:47,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:16:47,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:47,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:16:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:16:47,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:16:47,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:16:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:48,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:48,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:48,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-28 10:16:48,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:48,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 10:16:48,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:48,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:16:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:48,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-28 10:16:48,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:16:48,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-28 10:16:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:48,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:48,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:48,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:16:48,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:48,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 10:16:48,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:48,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:48,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:16:48,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:16:48,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 10:16:48,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:16:48,196 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 10:16:48,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719093389] [2020-10-28 10:16:48,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:16:48,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:16:48,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37757137] [2020-10-28 10:16:48,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:16:48,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:16:48,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:16:48,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:16:48,199 INFO L87 Difference]: Start difference. First operand 2569 states and 3507 transitions. Second operand 7 states. [2020-10-28 10:16:48,461 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:16:48,873 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:16:52,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:16:52,559 INFO L93 Difference]: Finished difference Result 7783 states and 11199 transitions. [2020-10-28 10:16:52,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:16:52,560 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 202 [2020-10-28 10:16:52,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:16:52,600 INFO L225 Difference]: With dead ends: 7783 [2020-10-28 10:16:52,600 INFO L226 Difference]: Without dead ends: 5220 [2020-10-28 10:16:52,611 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:16:52,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5220 states. [2020-10-28 10:16:52,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5220 to 5166. [2020-10-28 10:16:52,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5166 states. [2020-10-28 10:16:52,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5166 states to 5166 states and 6972 transitions. [2020-10-28 10:16:52,809 INFO L78 Accepts]: Start accepts. Automaton has 5166 states and 6972 transitions. Word has length 202 [2020-10-28 10:16:52,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:16:52,809 INFO L481 AbstractCegarLoop]: Abstraction has 5166 states and 6972 transitions. [2020-10-28 10:16:52,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:16:52,809 INFO L276 IsEmpty]: Start isEmpty. Operand 5166 states and 6972 transitions. [2020-10-28 10:16:52,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2020-10-28 10:16:52,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:16:52,862 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:16:52,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:16:52,862 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:16:52,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:16:52,863 INFO L82 PathProgramCache]: Analyzing trace with hash -169224237, now seen corresponding path program 1 times [2020-10-28 10:16:52,864 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:16:52,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908719954] [2020-10-28 10:16:52,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:16:52,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:53,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:53,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:55,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:57,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:57,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-10-28 10:16:57,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:16:57,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-28 10:16:57,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:57,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:16:57,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-28 10:16:57,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-28 10:16:57,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:16:58,333 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:16:58,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:16:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:58,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:58,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:58,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:16:58,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:58,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:16:58,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:58,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:16:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:58,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:16:58,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:16:58,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:16:58,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:58,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:58,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:58,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:16:58,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:16:58,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:58,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:16:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:58,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:16:58,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:16:58,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 10:16:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:16:58,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:16:58,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:16:58,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-28 10:16:58,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:16:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 10:16:58,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:16:58,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:16:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:16:58,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:16:58,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:16:58,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:16:58,591 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 44 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-28 10:16:58,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908719954] [2020-10-28 10:16:58,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:16:58,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:16:58,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35298529] [2020-10-28 10:16:58,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:16:58,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:16:58,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:16:58,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:16:58,594 INFO L87 Difference]: Start difference. First operand 5166 states and 6972 transitions. Second operand 5 states. [2020-10-28 10:16:58,975 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:17:02,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:02,520 INFO L93 Difference]: Finished difference Result 15180 states and 20954 transitions. [2020-10-28 10:17:02,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:17:02,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2020-10-28 10:17:02,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:02,593 INFO L225 Difference]: With dead ends: 15180 [2020-10-28 10:17:02,593 INFO L226 Difference]: Without dead ends: 10020 [2020-10-28 10:17:02,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:17:02,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10020 states. [2020-10-28 10:17:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10020 to 9996. [2020-10-28 10:17:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9996 states. [2020-10-28 10:17:02,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9996 states to 9996 states and 13379 transitions. [2020-10-28 10:17:02,956 INFO L78 Accepts]: Start accepts. Automaton has 9996 states and 13379 transitions. Word has length 208 [2020-10-28 10:17:02,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:02,956 INFO L481 AbstractCegarLoop]: Abstraction has 9996 states and 13379 transitions. [2020-10-28 10:17:02,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:17:02,957 INFO L276 IsEmpty]: Start isEmpty. Operand 9996 states and 13379 transitions. [2020-10-28 10:17:02,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-28 10:17:02,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:02,994 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:17:02,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:17:02,995 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:02,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:02,995 INFO L82 PathProgramCache]: Analyzing trace with hash -709455760, now seen corresponding path program 1 times [2020-10-28 10:17:02,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:02,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274690955] [2020-10-28 10:17:02,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:03,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:03,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:04,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:06,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:06,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-28 10:17:06,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:17:06,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3042 [2020-10-28 10:17:06,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:06,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-28 10:17:06,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 10:17:06,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:06,378 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:06,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:06,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:06,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:06,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:06,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:06,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:17:06,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:06,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:06,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:06,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:06,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:06,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:06,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:17:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:06,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:06,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:06,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:17:06,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 10:17:06,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:06,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 10:17:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:06,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 10:17:06,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:06,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:06,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:06,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:17:06,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:06,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 10:17:06,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:06,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:17:06,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 10:17:06,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:17:06,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274690955] [2020-10-28 10:17:06,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:17:06,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:17:06,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249209856] [2020-10-28 10:17:06,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:17:06,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:06,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:17:06,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:17:06,834 INFO L87 Difference]: Start difference. First operand 9996 states and 13379 transitions. Second operand 7 states. [2020-10-28 10:17:07,296 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:17:09,895 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-28 10:17:14,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:14,406 INFO L93 Difference]: Finished difference Result 25915 states and 37138 transitions. [2020-10-28 10:17:14,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:17:14,407 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 229 [2020-10-28 10:17:14,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:14,512 INFO L225 Difference]: With dead ends: 25915 [2020-10-28 10:17:14,513 INFO L226 Difference]: Without dead ends: 15925 [2020-10-28 10:17:14,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:17:14,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15925 states. [2020-10-28 10:17:15,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15925 to 15639. [2020-10-28 10:17:15,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15639 states. [2020-10-28 10:17:15,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15639 states to 15639 states and 20790 transitions. [2020-10-28 10:17:15,154 INFO L78 Accepts]: Start accepts. Automaton has 15639 states and 20790 transitions. Word has length 229 [2020-10-28 10:17:15,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:15,155 INFO L481 AbstractCegarLoop]: Abstraction has 15639 states and 20790 transitions. [2020-10-28 10:17:15,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:17:15,155 INFO L276 IsEmpty]: Start isEmpty. Operand 15639 states and 20790 transitions. [2020-10-28 10:17:15,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2020-10-28 10:17:15,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:15,209 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:15,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:17:15,209 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:15,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash 824897379, now seen corresponding path program 1 times [2020-10-28 10:17:15,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:15,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560196370] [2020-10-28 10:17:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:15,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:15,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:15,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:15,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:17,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:20,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:20,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-28 10:17:20,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:17:20,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-28 10:17:20,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:20,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:20,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:17:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-28 10:17:20,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-28 10:17:20,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:20,615 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:20,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:20,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:20,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:20,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:20,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:20,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:20,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:17:20,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:20,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:20,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:17:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:20,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:20,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:20,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:17:20,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:20,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 10:17:20,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:20,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:20,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:20,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:20,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:20,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:20,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:17:20,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:20,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:20,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:20,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:17:20,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:20,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:17:20,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:20,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:20,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 10:17:20,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:20,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 10:17:20,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:20,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:20,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:20,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:20,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:17:20,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:17:20,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 10:17:20,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:20,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:20,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-28 10:17:20,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:20,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 10:17:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:20,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:21,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:21,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 10:17:21,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:21,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 10:17:21,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:21,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:17:21,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 10:17:21,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:21,259 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 108 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 10:17:21,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560196370] [2020-10-28 10:17:21,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:17:21,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:17:21,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968749225] [2020-10-28 10:17:21,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:17:21,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:21,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:17:21,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:17:21,262 INFO L87 Difference]: Start difference. First operand 15639 states and 20790 transitions. Second operand 8 states. [2020-10-28 10:17:21,543 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:17:25,058 WARN L193 SmtUtils]: Spent 315.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:17:25,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:25,939 INFO L93 Difference]: Finished difference Result 30177 states and 40802 transitions. [2020-10-28 10:17:25,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:17:25,940 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 249 [2020-10-28 10:17:25,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:26,010 INFO L225 Difference]: With dead ends: 30177 [2020-10-28 10:17:26,010 INFO L226 Difference]: Without dead ends: 15857 [2020-10-28 10:17:26,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:17:26,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15857 states. [2020-10-28 10:17:26,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15857 to 15743. [2020-10-28 10:17:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15743 states. [2020-10-28 10:17:26,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15743 states to 15743 states and 20294 transitions. [2020-10-28 10:17:26,530 INFO L78 Accepts]: Start accepts. Automaton has 15743 states and 20294 transitions. Word has length 249 [2020-10-28 10:17:26,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:26,531 INFO L481 AbstractCegarLoop]: Abstraction has 15743 states and 20294 transitions. [2020-10-28 10:17:26,531 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:17:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 15743 states and 20294 transitions. [2020-10-28 10:17:26,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-10-28 10:17:26,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:26,587 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, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:17:26,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:17:26,587 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:26,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:26,588 INFO L82 PathProgramCache]: Analyzing trace with hash 383994118, now seen corresponding path program 1 times [2020-10-28 10:17:26,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:26,589 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1502148807] [2020-10-28 10:17:26,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:26,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:26,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:26,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:27,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:31,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:31,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-28 10:17:31,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:17:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4490 [2020-10-28 10:17:31,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:31,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:17:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-28 10:17:31,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 10:17:31,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:31,432 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:31,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:31,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:31,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:31,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:31,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:31,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:17:31,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:31,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:31,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:31,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:31,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:31,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:31,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:17:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:31,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:31,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:31,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-28 10:17:31,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:31,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 10:17:31,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:31,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:31,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 10:17:31,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:31,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 10:17:31,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:31,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:31,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:31,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:17:31,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:31,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 10:17:31,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:31,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:31,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:17:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:17:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:31,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 10:17:31,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:32,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:32,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 10:17:32,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:32,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 10:17:32,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:32,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:17:32,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 10:17:32,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:32,604 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 181 proven. 33 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-28 10:17:32,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1502148807] [2020-10-28 10:17:32,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:17:32,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:17:32,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315812487] [2020-10-28 10:17:32,606 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:17:32,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:32,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:17:32,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:17:32,607 INFO L87 Difference]: Start difference. First operand 15743 states and 20294 transitions. Second operand 8 states. [2020-10-28 10:17:33,120 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:17:33,736 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:17:39,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:39,273 INFO L93 Difference]: Finished difference Result 35031 states and 55647 transitions. [2020-10-28 10:17:39,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 10:17:39,274 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 286 [2020-10-28 10:17:39,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:39,424 INFO L225 Difference]: With dead ends: 35031 [2020-10-28 10:17:39,424 INFO L226 Difference]: Without dead ends: 20641 [2020-10-28 10:17:39,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:17:39,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20641 states. [2020-10-28 10:17:40,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20641 to 19461. [2020-10-28 10:17:40,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19461 states. [2020-10-28 10:17:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19461 states to 19461 states and 24944 transitions. [2020-10-28 10:17:40,452 INFO L78 Accepts]: Start accepts. Automaton has 19461 states and 24944 transitions. Word has length 286 [2020-10-28 10:17:40,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:40,452 INFO L481 AbstractCegarLoop]: Abstraction has 19461 states and 24944 transitions. [2020-10-28 10:17:40,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:17:40,453 INFO L276 IsEmpty]: Start isEmpty. Operand 19461 states and 24944 transitions. [2020-10-28 10:17:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2020-10-28 10:17:40,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:40,509 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:17:40,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 10:17:40,509 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:40,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:40,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1352750122, now seen corresponding path program 1 times [2020-10-28 10:17:40,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:40,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1347803462] [2020-10-28 10:17:40,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:40,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:40,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:43,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:43,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-28 10:17:43,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:17:43,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2823 [2020-10-28 10:17:43,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:43,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:43,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 10:17:43,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:17:43,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 10:17:43,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:43,668 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:43,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:43,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:43,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:43,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:43,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:43,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:43,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:17:43,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:43,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:43,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:17:43,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:43,917 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:17:43,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:17:43,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:43,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:43,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:43,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:17:43,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-28 10:17:43,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:43,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:17:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 10:17:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:44,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-28 10:17:44,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:44,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:44,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:44,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 10:17:44,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:44,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-28 10:17:44,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:44,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:44,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:17:44,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 10:17:44,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:44,413 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 147 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-28 10:17:44,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1347803462] [2020-10-28 10:17:44,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:17:44,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:17:44,414 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974287533] [2020-10-28 10:17:44,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:17:44,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:44,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:17:44,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:17:44,416 INFO L87 Difference]: Start difference. First operand 19461 states and 24944 transitions. Second operand 8 states. [2020-10-28 10:17:44,670 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:17:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:46,557 INFO L93 Difference]: Finished difference Result 36176 states and 46366 transitions. [2020-10-28 10:17:46,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:17:46,557 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 288 [2020-10-28 10:17:46,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:46,617 INFO L225 Difference]: With dead ends: 36176 [2020-10-28 10:17:46,618 INFO L226 Difference]: Without dead ends: 18088 [2020-10-28 10:17:46,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-10-28 10:17:46,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18088 states. [2020-10-28 10:17:47,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18088 to 18064. [2020-10-28 10:17:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18064 states. [2020-10-28 10:17:47,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18064 states to 18064 states and 22680 transitions. [2020-10-28 10:17:47,103 INFO L78 Accepts]: Start accepts. Automaton has 18064 states and 22680 transitions. Word has length 288 [2020-10-28 10:17:47,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:47,103 INFO L481 AbstractCegarLoop]: Abstraction has 18064 states and 22680 transitions. [2020-10-28 10:17:47,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:17:47,104 INFO L276 IsEmpty]: Start isEmpty. Operand 18064 states and 22680 transitions. [2020-10-28 10:17:47,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-28 10:17:47,279 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:47,279 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 10:17:47,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 10:17:47,280 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:47,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:47,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1544327410, now seen corresponding path program 1 times [2020-10-28 10:17:47,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:47,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275001580] [2020-10-28 10:17:47,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:47,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:47,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:47,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:47,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:47,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:50,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:52,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:52,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 10:17:52,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:17:52,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-28 10:17:52,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:52,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:52,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:17:52,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 10:17:52,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 10:17:52,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:52,669 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:17:52,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:17:52,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:52,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:52,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:52,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:17:52,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:52,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:17:52,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:52,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:52,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:52,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:52,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:17:52,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:17:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:52,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:52,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:52,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:17:52,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:52,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:17:52,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:52,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:17:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:17:52,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 10:17:52,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:52,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:17:52,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:52,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:52,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:52,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:17:52,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:17:52,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:17:52,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:52,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:17:52,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:17:52,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:52,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-28 10:17:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:52,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:53,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:53,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 10:17:53,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:53,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-28 10:17:53,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:53,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:17:53,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:17:53,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 10:17:53,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:53,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 10:17:53,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:53,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:53,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:17:53,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:17:53,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:17:53,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-28 10:17:53,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:17:53,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:17:53,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:17:53,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 10:17:53,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:17:53,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:17:53,369 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 150 proven. 39 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-28 10:17:53,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275001580] [2020-10-28 10:17:53,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:17:53,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 10:17:53,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921927215] [2020-10-28 10:17:53,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 10:17:53,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:17:53,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 10:17:53,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-28 10:17:53,372 INFO L87 Difference]: Start difference. First operand 18064 states and 22680 transitions. Second operand 9 states. [2020-10-28 10:17:53,633 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:17:54,015 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:17:55,288 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:17:59,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:17:59,099 INFO L93 Difference]: Finished difference Result 34616 states and 43436 transitions. [2020-10-28 10:17:59,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 10:17:59,100 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 301 [2020-10-28 10:17:59,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:17:59,146 INFO L225 Difference]: With dead ends: 34616 [2020-10-28 10:17:59,146 INFO L226 Difference]: Without dead ends: 17925 [2020-10-28 10:17:59,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2020-10-28 10:17:59,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17925 states. [2020-10-28 10:17:59,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17925 to 17855. [2020-10-28 10:17:59,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17855 states. [2020-10-28 10:17:59,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17855 states to 17855 states and 21377 transitions. [2020-10-28 10:17:59,596 INFO L78 Accepts]: Start accepts. Automaton has 17855 states and 21377 transitions. Word has length 301 [2020-10-28 10:17:59,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:17:59,596 INFO L481 AbstractCegarLoop]: Abstraction has 17855 states and 21377 transitions. [2020-10-28 10:17:59,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 10:17:59,596 INFO L276 IsEmpty]: Start isEmpty. Operand 17855 states and 21377 transitions. [2020-10-28 10:17:59,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2020-10-28 10:17:59,628 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:17:59,628 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:17:59,628 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 10:17:59,629 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:17:59,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:17:59,629 INFO L82 PathProgramCache]: Analyzing trace with hash 1733103328, now seen corresponding path program 1 times [2020-10-28 10:17:59,629 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:17:59,630 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1809423707] [2020-10-28 10:17:59,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:17:59,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:17:59,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:17:59,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:00,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:03,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:04,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:04,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-28 10:18:04,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:18:04,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 10:18:04,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:04,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:18:04,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-28 10:18:04,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 10:18:04,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:04,990 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:04,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:05,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:05,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:05,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:05,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:05,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:05,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:18:05,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:05,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:05,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:05,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:05,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:05,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:05,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:05,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:18:05,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:05,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:18:05,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:05,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:05,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:05,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:05,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:18:05,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:05,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:05,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:05,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-28 10:18:05,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:05,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 10:18:05,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:05,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:05,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:05,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 10:18:05,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:05,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 10:18:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:05,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:05,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:05,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:18:05,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:05,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 10:18:05,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:05,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:05,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:18:05,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:05,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 10:18:05,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:05,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:05,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:05,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 10:18:05,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 10:18:05,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:05,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:05,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 10:18:05,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:05,643 INFO L134 CoverageAnalysis]: Checked inductivity of 286 backedges. 235 proven. 33 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-28 10:18:05,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1809423707] [2020-10-28 10:18:05,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:05,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:18:05,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912175787] [2020-10-28 10:18:05,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:18:05,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:05,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:18:05,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:18:05,646 INFO L87 Difference]: Start difference. First operand 17855 states and 21377 transitions. Second operand 8 states. [2020-10-28 10:18:06,679 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:18:07,695 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:18:13,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:13,403 INFO L93 Difference]: Finished difference Result 35900 states and 45139 transitions. [2020-10-28 10:18:13,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:18:13,404 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 308 [2020-10-28 10:18:13,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:13,476 INFO L225 Difference]: With dead ends: 35900 [2020-10-28 10:18:13,477 INFO L226 Difference]: Without dead ends: 19418 [2020-10-28 10:18:13,511 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-28 10:18:13,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19418 states. [2020-10-28 10:18:14,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19418 to 19000. [2020-10-28 10:18:14,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19000 states. [2020-10-28 10:18:14,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19000 states to 19000 states and 22819 transitions. [2020-10-28 10:18:14,232 INFO L78 Accepts]: Start accepts. Automaton has 19000 states and 22819 transitions. Word has length 308 [2020-10-28 10:18:14,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:14,233 INFO L481 AbstractCegarLoop]: Abstraction has 19000 states and 22819 transitions. [2020-10-28 10:18:14,233 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:18:14,233 INFO L276 IsEmpty]: Start isEmpty. Operand 19000 states and 22819 transitions. [2020-10-28 10:18:14,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2020-10-28 10:18:14,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:14,267 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:14,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 10:18:14,267 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:14,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:14,268 INFO L82 PathProgramCache]: Analyzing trace with hash 348784959, now seen corresponding path program 1 times [2020-10-28 10:18:14,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:14,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051851228] [2020-10-28 10:18:14,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:14,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:14,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:14,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:14,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:15,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:19,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:19,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-28 10:18:19,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:18:19,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-28 10:18:19,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:19,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-28 10:18:19,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 10:18:19,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:18:19,761 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:19,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:19,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:19,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:19,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:19,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:19,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:18:19,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:19,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:19,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:19,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:19,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:19,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:19,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:19,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-28 10:18:19,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:19,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:18:19,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:19,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:19,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 10:18:19,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:19,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-28 10:18:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:19,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:20,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:20,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 10:18:20,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:20,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 10:18:20,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:20,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:20,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 10:18:20,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:20,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 10:18:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:20,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:20,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:20,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:18:20,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:20,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:18:20,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:20,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:20,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:20,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 10:18:20,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:20,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:20,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 10:18:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:20,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:20,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:20,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:18:20,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:20,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 10:18:20,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:20,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:18:20,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:20,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:20,403 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 164 proven. 68 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-28 10:18:20,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051851228] [2020-10-28 10:18:20,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:20,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:18:20,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420576682] [2020-10-28 10:18:20,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:18:20,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:20,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:18:20,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:18:20,405 INFO L87 Difference]: Start difference. First operand 19000 states and 22819 transitions. Second operand 7 states. [2020-10-28 10:18:20,679 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:18:22,261 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:18:24,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:24,311 INFO L93 Difference]: Finished difference Result 45818 states and 55720 transitions. [2020-10-28 10:18:24,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:18:24,312 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 320 [2020-10-28 10:18:24,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:24,373 INFO L225 Difference]: With dead ends: 45818 [2020-10-28 10:18:24,374 INFO L226 Difference]: Without dead ends: 27707 [2020-10-28 10:18:24,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:18:24,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27707 states. [2020-10-28 10:18:25,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27707 to 27442. [2020-10-28 10:18:25,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27442 states. [2020-10-28 10:18:25,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27442 states to 27442 states and 32265 transitions. [2020-10-28 10:18:25,373 INFO L78 Accepts]: Start accepts. Automaton has 27442 states and 32265 transitions. Word has length 320 [2020-10-28 10:18:25,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:25,374 INFO L481 AbstractCegarLoop]: Abstraction has 27442 states and 32265 transitions. [2020-10-28 10:18:25,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:18:25,374 INFO L276 IsEmpty]: Start isEmpty. Operand 27442 states and 32265 transitions. [2020-10-28 10:18:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-28 10:18:25,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:25,420 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:25,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 10:18:25,420 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:25,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:25,421 INFO L82 PathProgramCache]: Analyzing trace with hash -2030170051, now seen corresponding path program 1 times [2020-10-28 10:18:25,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:25,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1815425674] [2020-10-28 10:18:25,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:25,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:25,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:25,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:25,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:25,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:26,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:30,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:30,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:30,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 371 [2020-10-28 10:18:30,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 10:18:30,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-28 10:18:30,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:30,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:18:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-28 10:18:30,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-28 10:18:30,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:30,812 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:30,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:30,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:30,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:30,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:30,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:30,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:18:30,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:30,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:30,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:30,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:30,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:30,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:30,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:30,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:18:30,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:30,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:18:30,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:30,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:30,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:30,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:30,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 10:18:30,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:30,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:18:30,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:30,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:31,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:31,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 10:18:31,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:31,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 10:18:31,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:31,029 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:31,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-28 10:18:31,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:31,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 10:18:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:31,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:31,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:31,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 10:18:31,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:31,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-28 10:18:31,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:31,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:31,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:31,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:31,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 10:18:31,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:31,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 10:18:31,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:31,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:31,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:18:31,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:31,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:18:31,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:31,394 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:31,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 10:18:31,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:31,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:31,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-28 10:18:31,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:31,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:31,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:31,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:18:31,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:31,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 10:18:31,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:31,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:31,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:18:31,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:31,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:31,648 INFO L134 CoverageAnalysis]: Checked inductivity of 421 backedges. 207 proven. 126 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 10:18:31,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1815425674] [2020-10-28 10:18:31,649 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:31,649 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:18:31,649 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862186107] [2020-10-28 10:18:31,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:18:31,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:31,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:18:31,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:18:31,651 INFO L87 Difference]: Start difference. First operand 27442 states and 32265 transitions. Second operand 7 states. [2020-10-28 10:18:31,941 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:18:33,140 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:18:35,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:35,598 INFO L93 Difference]: Finished difference Result 54254 states and 64677 transitions. [2020-10-28 10:18:35,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:18:35,599 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-28 10:18:35,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:35,656 INFO L225 Difference]: With dead ends: 54254 [2020-10-28 10:18:35,657 INFO L226 Difference]: Without dead ends: 27234 [2020-10-28 10:18:35,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:18:35,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27234 states. [2020-10-28 10:18:36,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27234 to 27008. [2020-10-28 10:18:36,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27008 states. [2020-10-28 10:18:36,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27008 states to 27008 states and 30983 transitions. [2020-10-28 10:18:36,363 INFO L78 Accepts]: Start accepts. Automaton has 27008 states and 30983 transitions. Word has length 351 [2020-10-28 10:18:36,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:36,363 INFO L481 AbstractCegarLoop]: Abstraction has 27008 states and 30983 transitions. [2020-10-28 10:18:36,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:18:36,363 INFO L276 IsEmpty]: Start isEmpty. Operand 27008 states and 30983 transitions. [2020-10-28 10:18:36,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-28 10:18:36,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:36,406 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:18:36,406 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 10:18:36,407 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:36,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:36,407 INFO L82 PathProgramCache]: Analyzing trace with hash 499500756, now seen corresponding path program 1 times [2020-10-28 10:18:36,407 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:36,408 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1669855036] [2020-10-28 10:18:36,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:36,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:36,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:36,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:38,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:39,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:40,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:41,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:41,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:41,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 372 [2020-10-28 10:18:41,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-28 10:18:41,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-28 10:18:41,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:41,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 10:18:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 10:18:41,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:41,928 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:41,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:41,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:41,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:41,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:41,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:41,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 10:18:41,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:41,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:41,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:41,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:41,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:42,064 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-10-28 10:18:42,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:42,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:42,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:42,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:18:42,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:18:42,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:42,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:42,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-28 10:18:42,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:42,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:42,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:42,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-28 10:18:42,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:42,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 10:18:42,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:42,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:42,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:18:42,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:42,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 10:18:42,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:42,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:42,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:42,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 10:18:42,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:42,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-28 10:18:42,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:42,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:42,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:42,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 10:18:42,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:42,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-28 10:18:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:42,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:42,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:42,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:18:42,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:42,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:18:42,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:42,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-28 10:18:42,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:42,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:42,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-28 10:18:42,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:42,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:42,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:42,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:18:42,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:42,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-28 10:18:42,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:42,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-28 10:18:42,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:42,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 235 proven. 68 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2020-10-28 10:18:42,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1669855036] [2020-10-28 10:18:42,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:42,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:18:42,802 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082352826] [2020-10-28 10:18:42,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:18:42,803 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:42,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:18:42,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:18:42,803 INFO L87 Difference]: Start difference. First operand 27008 states and 30983 transitions. Second operand 7 states. [2020-10-28 10:18:43,310 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:18:44,819 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-28 10:18:47,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:47,061 INFO L93 Difference]: Finished difference Result 58130 states and 69652 transitions. [2020-10-28 10:18:47,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:18:47,061 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 352 [2020-10-28 10:18:47,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:47,174 INFO L225 Difference]: With dead ends: 58130 [2020-10-28 10:18:47,174 INFO L226 Difference]: Without dead ends: 32046 [2020-10-28 10:18:47,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:18:47,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32046 states. [2020-10-28 10:18:47,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32046 to 31232. [2020-10-28 10:18:47,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31232 states. [2020-10-28 10:18:48,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31232 states to 31232 states and 35387 transitions. [2020-10-28 10:18:48,036 INFO L78 Accepts]: Start accepts. Automaton has 31232 states and 35387 transitions. Word has length 352 [2020-10-28 10:18:48,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:48,036 INFO L481 AbstractCegarLoop]: Abstraction has 31232 states and 35387 transitions. [2020-10-28 10:18:48,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:18:48,037 INFO L276 IsEmpty]: Start isEmpty. Operand 31232 states and 35387 transitions. [2020-10-28 10:18:48,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 352 [2020-10-28 10:18:48,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:48,081 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, 3, 3, 3, 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, 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 10:18:48,081 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 10:18:48,081 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:48,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:48,082 INFO L82 PathProgramCache]: Analyzing trace with hash 832743586, now seen corresponding path program 1 times [2020-10-28 10:18:48,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:48,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626176127] [2020-10-28 10:18:48,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:48,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:48,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:48,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:50,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:50,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-10-28 10:18:50,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:18:50,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2187 [2020-10-28 10:18:50,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:50,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 10:18:50,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 10:18:50,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:50,685 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:18:50,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:18:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:50,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:50,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:18:50,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:50,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:18:50,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:50,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:50,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:18:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:50,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:50,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:50,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 10:18:50,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:50,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-28 10:18:50,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:50,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:18:50,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:18:50,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 10:18:50,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:50,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 10:18:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:51,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:51,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:18:51,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:51,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 10:18:51,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:51,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:18:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:18:51,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:18:51,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:51,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-28 10:18:51,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:51,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:51,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:18:51,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 10:18:51,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:18:51,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 10:18:51,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:18:51,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:18:51,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:18:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-28 10:18:51,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:18:51,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:18:51,550 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 218 proven. 33 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-28 10:18:51,550 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626176127] [2020-10-28 10:18:51,551 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:18:51,551 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:18:51,551 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834217086] [2020-10-28 10:18:51,552 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:18:51,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:18:51,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:18:51,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:18:51,553 INFO L87 Difference]: Start difference. First operand 31232 states and 35387 transitions. Second operand 7 states. [2020-10-28 10:18:51,832 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-28 10:18:54,089 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-28 10:18:55,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:18:55,735 INFO L93 Difference]: Finished difference Result 65042 states and 73925 transitions. [2020-10-28 10:18:55,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:18:55,736 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 351 [2020-10-28 10:18:55,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:18:55,798 INFO L225 Difference]: With dead ends: 65042 [2020-10-28 10:18:55,799 INFO L226 Difference]: Without dead ends: 34476 [2020-10-28 10:18:55,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:18:55,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34476 states. [2020-10-28 10:18:56,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34476 to 34342. [2020-10-28 10:18:56,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34342 states. [2020-10-28 10:18:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34342 states to 34342 states and 38939 transitions. [2020-10-28 10:18:56,540 INFO L78 Accepts]: Start accepts. Automaton has 34342 states and 38939 transitions. Word has length 351 [2020-10-28 10:18:56,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:18:56,540 INFO L481 AbstractCegarLoop]: Abstraction has 34342 states and 38939 transitions. [2020-10-28 10:18:56,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:18:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 34342 states and 38939 transitions. [2020-10-28 10:18:56,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-10-28 10:18:56,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:18:56,583 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:18:56,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 10:18:56,583 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:18:56,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:18:56,584 INFO L82 PathProgramCache]: Analyzing trace with hash -322950105, now seen corresponding path program 1 times [2020-10-28 10:18:56,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:18:56,584 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [142392365] [2020-10-28 10:18:56,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:18:56,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:18:56,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:56,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:57,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:18:57,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:01,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:01,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 379 [2020-10-28 10:19:01,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:19:01,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-28 10:19:01,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:01,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:19:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 122 [2020-10-28 10:19:01,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 10:19:01,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:02,027 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:02,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:02,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:02,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:02,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:02,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:02,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:19:02,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:02,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:02,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:02,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:02,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:02,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:02,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:19:02,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:02,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:19:02,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:02,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:02,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:02,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:02,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-28 10:19:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:02,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:02,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:02,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 10:19:02,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:02,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-28 10:19:02,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:02,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:02,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:02,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:02,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 10:19:02,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:02,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 10:19:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:02,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:02,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:02,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:19:02,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:02,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 10:19:02,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:02,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:02,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:19:02,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:02,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 10:19:02,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:02,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:02,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:02,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-28 10:19:02,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:02,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 10:19:02,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:02,595 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:02,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:02,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:02,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-28 10:19:02,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:02,813 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 319 proven. 33 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-28 10:19:02,813 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [142392365] [2020-10-28 10:19:02,813 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:02,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:19:02,814 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127468729] [2020-10-28 10:19:02,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:19:02,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:02,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:19:02,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:19:02,815 INFO L87 Difference]: Start difference. First operand 34342 states and 38939 transitions. Second operand 8 states. [2020-10-28 10:19:03,341 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:04,788 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-28 10:19:10,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:19:10,962 INFO L93 Difference]: Finished difference Result 122054 states and 146984 transitions. [2020-10-28 10:19:10,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 10:19:10,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 361 [2020-10-28 10:19:10,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:19:11,228 INFO L225 Difference]: With dead ends: 122054 [2020-10-28 10:19:11,228 INFO L226 Difference]: Without dead ends: 88392 [2020-10-28 10:19:11,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-28 10:19:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88392 states. [2020-10-28 10:19:14,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88392 to 86479. [2020-10-28 10:19:14,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86479 states. [2020-10-28 10:19:14,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86479 states to 86479 states and 99430 transitions. [2020-10-28 10:19:14,430 INFO L78 Accepts]: Start accepts. Automaton has 86479 states and 99430 transitions. Word has length 361 [2020-10-28 10:19:14,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:19:14,430 INFO L481 AbstractCegarLoop]: Abstraction has 86479 states and 99430 transitions. [2020-10-28 10:19:14,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:19:14,430 INFO L276 IsEmpty]: Start isEmpty. Operand 86479 states and 99430 transitions. [2020-10-28 10:19:14,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 373 [2020-10-28 10:19:14,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:19:14,730 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 10:19:14,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 10:19:14,730 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:19:14,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:19:14,731 INFO L82 PathProgramCache]: Analyzing trace with hash -226886455, now seen corresponding path program 1 times [2020-10-28 10:19:14,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:19:14,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151695788] [2020-10-28 10:19:14,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:19:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:14,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:14,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:15,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:16,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:18,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:19,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:19,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-28 10:19:19,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:19:19,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-10-28 10:19:19,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:19,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 10:19:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 151 [2020-10-28 10:19:19,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 10:19:19,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:20,165 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-28 10:19:20,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:19:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:20,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:20,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:20,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:19:20,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:20,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:19:20,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:20,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:20,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:20,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:20,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:20,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:19:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:20,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:20,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:20,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-28 10:19:20,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:20,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 10:19:20,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:20,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:19:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:20,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:19:20,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:20,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 10:19:20,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:20,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:20,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:20,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-28 10:19:20,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:20,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 10:19:20,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:20,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:19:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:19:20,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 10:19:20,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:20,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-28 10:19:20,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:20,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:20,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:20,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 10:19:20,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 10:19:20,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:20,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:19:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-28 10:19:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:20,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-28 10:19:20,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:19:20,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:19:20,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:19:20,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-28 10:19:20,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:19:20,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 10:19:20,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:19:20,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:19:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:19:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:19:20,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-28 10:19:20,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:19:20,974 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 369 proven. 6 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-28 10:19:20,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151695788] [2020-10-28 10:19:20,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:19:20,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 10:19:20,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579612829] [2020-10-28 10:19:20,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 10:19:20,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:19:20,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 10:19:20,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-28 10:19:20,976 INFO L87 Difference]: Start difference. First operand 86479 states and 99430 transitions. Second operand 10 states. [2020-10-28 10:19:21,238 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-28 10:19:21,729 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-28 10:19:23,465 WARN L193 SmtUtils]: Spent 508.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 161 [2020-10-28 10:19:26,590 WARN L193 SmtUtils]: Spent 233.00 ms on a formula simplification that was a NOOP. DAG size: 164