/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:18:29,836 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:18:29,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:18:29,877 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:18:29,878 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:18:29,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:18:29,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:18:29,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:18:29,886 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:18:29,887 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:18:29,889 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:18:29,890 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:18:29,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:18:29,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:18:29,894 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:18:29,895 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:18:29,896 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:18:29,897 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:18:29,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:18:29,914 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:18:29,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:18:29,921 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:18:29,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:18:29,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:18:29,934 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:18:29,934 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:18:29,934 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:18:29,936 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:18:29,936 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:18:29,941 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:18:29,941 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:18:29,942 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:18:29,943 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:18:29,944 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:18:29,945 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:18:29,946 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:18:29,947 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:18:29,947 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:18:29,947 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:18:29,948 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:18:29,949 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:18:29,950 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:18:29,979 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:18:29,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:18:29,981 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:18:29,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:18:29,982 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:18:29,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:18:29,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:18:29,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:18:29,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:18:29,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:18:29,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:18:29,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:18:29,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:18:29,984 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:18:29,985 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:18:29,985 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:18:29,985 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:18:29,985 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:18:29,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:18:29,986 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:18:29,986 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:18:29,986 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:18:29,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:18:29,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:18:29,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:18:29,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:18:29,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:18:29,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:18:29,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:18:29,989 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:18:30,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:18:30,382 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:18:30,386 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:18:30,387 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:18:30,388 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:18:30,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label17.c [2020-10-28 13:18:30,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27b41e755/4feeea9ccc61400faa7c5b82b1a72ca0/FLAG24fb81049 [2020-10-28 13:18:31,472 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:18:31,473 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label17.c [2020-10-28 13:18:31,504 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27b41e755/4feeea9ccc61400faa7c5b82b1a72ca0/FLAG24fb81049 [2020-10-28 13:18:31,991 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/27b41e755/4feeea9ccc61400faa7c5b82b1a72ca0 [2020-10-28 13:18:31,996 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:18:32,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:18:32,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:18:32,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:18:32,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:18:32,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:18:31" (1/1) ... [2020-10-28 13:18:32,021 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e187d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:32, skipping insertion in model container [2020-10-28 13:18:32,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:18:31" (1/1) ... [2020-10-28 13:18:32,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:18:32,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:18:32,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:18:32,973 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:18:33,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:18:33,297 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:18:33,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:33 WrapperNode [2020-10-28 13:18:33,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:18:33,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:18:33,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:18:33,300 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:18:33,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:33" (1/1) ... [2020-10-28 13:18:33,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:33" (1/1) ... [2020-10-28 13:18:33,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:33" (1/1) ... [2020-10-28 13:18:33,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:33" (1/1) ... [2020-10-28 13:18:33,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:33" (1/1) ... [2020-10-28 13:18:33,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:33" (1/1) ... [2020-10-28 13:18:33,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:33" (1/1) ... [2020-10-28 13:18:33,534 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:18:33,535 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:18:33,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:18:33,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:18:33,538 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:33" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:18:33,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:18:33,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:18:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:18:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:18:33,628 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:18:33,629 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:18:33,629 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:18:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:18:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:18:33,630 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:18:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:18:33,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:18:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:18:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:18:33,632 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:18:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:18:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:18:33,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:18:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:18:33,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:18:33,635 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:18:36,576 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:18:36,577 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:18:36,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:18:36 BoogieIcfgContainer [2020-10-28 13:18:36,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:18:36,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:18:36,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:18:36,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:18:36,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:18:31" (1/3) ... [2020-10-28 13:18:36,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10674f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:18:36, skipping insertion in model container [2020-10-28 13:18:36,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:18:33" (2/3) ... [2020-10-28 13:18:36,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10674f71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:18:36, skipping insertion in model container [2020-10-28 13:18:36,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:18:36" (3/3) ... [2020-10-28 13:18:36,590 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label17.c [2020-10-28 13:18:36,603 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:18:36,610 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:18:36,625 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:18:36,658 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:18:36,658 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:18:36,658 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:18:36,659 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:18:36,659 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:18:36,659 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:18:36,659 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:18:36,659 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:18:36,689 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-28 13:18:36,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-28 13:18:36,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:36,701 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] [2020-10-28 13:18:36,702 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:36,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:36,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1408148900, now seen corresponding path program 1 times [2020-10-28 13:18:36,720 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:36,720 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795285588] [2020-10-28 13:18:36,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:36,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:37,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:37,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:18:37,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:37,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 739 [2020-10-28 13:18:37,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:37,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:18:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:18:37,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-28 13:18:37,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:18:37,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:37,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:37,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:37,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:37,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:37,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:37,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:18:37,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:37,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:37,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:18:37,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:18:37,961 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:18:37,962 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795285588] [2020-10-28 13:18:37,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:18:37,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:18:37,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300694419] [2020-10-28 13:18:37,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:18:37,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:37,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:18:37,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:18:37,994 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 5 states. [2020-10-28 13:18:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:44,962 INFO L93 Difference]: Finished difference Result 1520 states and 2853 transitions. [2020-10-28 13:18:44,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:18:44,964 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-10-28 13:18:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:44,990 INFO L225 Difference]: With dead ends: 1520 [2020-10-28 13:18:44,990 INFO L226 Difference]: Without dead ends: 1039 [2020-10-28 13:18:45,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:18:45,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1039 states. [2020-10-28 13:18:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1039 to 1032. [2020-10-28 13:18:45,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1032 states. [2020-10-28 13:18:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1032 states to 1032 states and 1630 transitions. [2020-10-28 13:18:45,157 INFO L78 Accepts]: Start accepts. Automaton has 1032 states and 1630 transitions. Word has length 65 [2020-10-28 13:18:45,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:45,159 INFO L481 AbstractCegarLoop]: Abstraction has 1032 states and 1630 transitions. [2020-10-28 13:18:45,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:18:45,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1032 states and 1630 transitions. [2020-10-28 13:18:45,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-28 13:18:45,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:45,174 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:45,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:18:45,174 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:45,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:45,175 INFO L82 PathProgramCache]: Analyzing trace with hash -1438680043, now seen corresponding path program 1 times [2020-10-28 13:18:45,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:45,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35865670] [2020-10-28 13:18:45,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:45,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:45,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:46,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:46,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-28 13:18:46,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:18:46,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1185 [2020-10-28 13:18:46,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:46,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:18:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:18:46,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:18:46,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:18:46,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:18:46,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:46,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:46,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:46,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:18:46,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:46,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:18:46,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:46,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:46,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:18:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:18:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:18:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:18:46,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:18:46,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:46,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:46,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:18:46,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:18:46,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:18:46,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-28 13:18:46,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:18:46,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:18:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:18:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:18:46,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:18:46,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:18:47,010 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:18:47,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35865670] [2020-10-28 13:18:47,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:18:47,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 13:18:47,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813619197] [2020-10-28 13:18:47,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:18:47,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:18:47,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:18:47,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:18:47,019 INFO L87 Difference]: Start difference. First operand 1032 states and 1630 transitions. Second operand 8 states. [2020-10-28 13:18:55,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:18:55,711 INFO L93 Difference]: Finished difference Result 4158 states and 6722 transitions. [2020-10-28 13:18:55,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:18:55,711 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-10-28 13:18:55,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:18:55,738 INFO L225 Difference]: With dead ends: 4158 [2020-10-28 13:18:55,738 INFO L226 Difference]: Without dead ends: 3132 [2020-10-28 13:18:55,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:18:55,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3132 states. [2020-10-28 13:18:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3132 to 3116. [2020-10-28 13:18:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3116 states. [2020-10-28 13:18:55,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3116 states to 3116 states and 4537 transitions. [2020-10-28 13:18:55,894 INFO L78 Accepts]: Start accepts. Automaton has 3116 states and 4537 transitions. Word has length 140 [2020-10-28 13:18:55,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:18:55,897 INFO L481 AbstractCegarLoop]: Abstraction has 3116 states and 4537 transitions. [2020-10-28 13:18:55,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:18:55,897 INFO L276 IsEmpty]: Start isEmpty. Operand 3116 states and 4537 transitions. [2020-10-28 13:18:55,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-28 13:18:55,913 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:18:55,914 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:18:55,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:18:55,915 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:18:55,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:18:55,916 INFO L82 PathProgramCache]: Analyzing trace with hash -167280212, now seen corresponding path program 1 times [2020-10-28 13:18:55,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:18:55,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948454136] [2020-10-28 13:18:55,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:18:56,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:18:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:56,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:56,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:56,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:18:58,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:01,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:01,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-28 13:19:01,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:19:01,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 13:19:01,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:01,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:01,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:01,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:19:01,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:19:01,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:01,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:01,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:01,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:01,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:01,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:19:01,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:01,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:01,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:01,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:01,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:01,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:01,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:01,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:01,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:19:01,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:01,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:19:01,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:01,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:01,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:19:01,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:01,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:19:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:01,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:01,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:01,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:19:01,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:01,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-28 13:19:01,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:01,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:01,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 13:19:01,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:01,610 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:19:01,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948454136] [2020-10-28 13:19:01,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:01,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:01,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160728713] [2020-10-28 13:19:01,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:01,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:01,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:01,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:01,613 INFO L87 Difference]: Start difference. First operand 3116 states and 4537 transitions. Second operand 7 states. [2020-10-28 13:19:07,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:07,460 INFO L93 Difference]: Finished difference Result 8323 states and 12500 transitions. [2020-10-28 13:19:07,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:19:07,466 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-28 13:19:07,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:07,507 INFO L225 Difference]: With dead ends: 8323 [2020-10-28 13:19:07,507 INFO L226 Difference]: Without dead ends: 5213 [2020-10-28 13:19:07,517 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:19:07,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5213 states. [2020-10-28 13:19:07,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5213 to 4166. [2020-10-28 13:19:07,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4166 states. [2020-10-28 13:19:07,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4166 states to 4166 states and 5993 transitions. [2020-10-28 13:19:07,710 INFO L78 Accepts]: Start accepts. Automaton has 4166 states and 5993 transitions. Word has length 239 [2020-10-28 13:19:07,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:07,714 INFO L481 AbstractCegarLoop]: Abstraction has 4166 states and 5993 transitions. [2020-10-28 13:19:07,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:07,714 INFO L276 IsEmpty]: Start isEmpty. Operand 4166 states and 5993 transitions. [2020-10-28 13:19:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-28 13:19:07,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:07,722 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:07,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:19:07,722 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:07,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:07,723 INFO L82 PathProgramCache]: Analyzing trace with hash 1374967476, now seen corresponding path program 1 times [2020-10-28 13:19:07,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:07,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557186361] [2020-10-28 13:19:07,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:07,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:09,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:09,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:12,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:12,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 294 [2020-10-28 13:19:12,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:19:12,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-28 13:19:12,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:12,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:12,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:12,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:19:12,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 13:19:12,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:12,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:12,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:12,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:12,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:12,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:12,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:19:12,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:12,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:12,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:12,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:12,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:19:12,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:13,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:13,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:13,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:19:13,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:13,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-28 13:19:13,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:13,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:13,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:19:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:13,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:19:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:13,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:13,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:13,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:19:13,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:13,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-28 13:19:13,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:13,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:13,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-28 13:19:13,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 211 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:19:13,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557186361] [2020-10-28 13:19:13,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:13,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:13,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561986407] [2020-10-28 13:19:13,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:13,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:13,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:13,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:13,609 INFO L87 Difference]: Start difference. First operand 4166 states and 5993 transitions. Second operand 7 states. [2020-10-28 13:19:18,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:18,769 INFO L93 Difference]: Finished difference Result 9408 states and 13541 transitions. [2020-10-28 13:19:18,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:19:18,770 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-28 13:19:18,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:18,801 INFO L225 Difference]: With dead ends: 9408 [2020-10-28 13:19:18,801 INFO L226 Difference]: Without dead ends: 5248 [2020-10-28 13:19:18,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:19:18,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5248 states. [2020-10-28 13:19:18,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5248 to 4879. [2020-10-28 13:19:18,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4879 states. [2020-10-28 13:19:18,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 6386 transitions. [2020-10-28 13:19:18,976 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 6386 transitions. Word has length 280 [2020-10-28 13:19:18,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:18,977 INFO L481 AbstractCegarLoop]: Abstraction has 4879 states and 6386 transitions. [2020-10-28 13:19:18,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:18,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 6386 transitions. [2020-10-28 13:19:18,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-10-28 13:19:18,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:18,990 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:18,990 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:19:18,990 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:18,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:18,991 INFO L82 PathProgramCache]: Analyzing trace with hash 170303409, now seen corresponding path program 1 times [2020-10-28 13:19:18,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:18,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789067557] [2020-10-28 13:19:18,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:19,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:19,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:19,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:19,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:23,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:24,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:24,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 425 [2020-10-28 13:19:24,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:19:24,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-28 13:19:24,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:24,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:24,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:19:24,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:19:24,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 13:19:24,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:24,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:24,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:24,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:24,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:24,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:24,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:19:24,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:24,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:24,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:24,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:24,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:24,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:24,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:19:24,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:24,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:19:24,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:24,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:24,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:24,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:19:24,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:24,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:19:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:24,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:24,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:24,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:19:24,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:24,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 13:19:24,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:24,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:24,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:24,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:24,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:19:24,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:24,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-28 13:19:24,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:24,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:24,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:24,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:19:24,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:24,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:19:24,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:24,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:19:24,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:24,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:25,195 INFO L134 CoverageAnalysis]: Checked inductivity of 486 backedges. 272 proven. 114 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 13:19:25,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789067557] [2020-10-28 13:19:25,196 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:25,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:25,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269228470] [2020-10-28 13:19:25,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:25,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:25,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:25,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:25,200 INFO L87 Difference]: Start difference. First operand 4879 states and 6386 transitions. Second operand 7 states. [2020-10-28 13:19:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:31,292 INFO L93 Difference]: Finished difference Result 9811 states and 12885 transitions. [2020-10-28 13:19:31,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:19:31,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 409 [2020-10-28 13:19:31,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:31,318 INFO L225 Difference]: With dead ends: 9811 [2020-10-28 13:19:31,318 INFO L226 Difference]: Without dead ends: 4938 [2020-10-28 13:19:31,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:19:31,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2020-10-28 13:19:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4563. [2020-10-28 13:19:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2020-10-28 13:19:31,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 5540 transitions. [2020-10-28 13:19:31,475 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 5540 transitions. Word has length 409 [2020-10-28 13:19:31,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:31,476 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 5540 transitions. [2020-10-28 13:19:31,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:31,476 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 5540 transitions. [2020-10-28 13:19:31,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2020-10-28 13:19:31,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:31,492 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:31,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:19:31,493 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:31,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:31,493 INFO L82 PathProgramCache]: Analyzing trace with hash -147115139, now seen corresponding path program 1 times [2020-10-28 13:19:31,494 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:31,494 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1175197579] [2020-10-28 13:19:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:31,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:31,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:36,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:36,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 543 [2020-10-28 13:19:36,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:19:36,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 13:19:36,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:36,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:19:36,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:19:36,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-28 13:19:36,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:36,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:36,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:36,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:36,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:36,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:36,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:19:36,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:36,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:36,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:19:36,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:36,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:36,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:36,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:37,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:37,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:19:37,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:37,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-28 13:19:37,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:37,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:37,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:37,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:37,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:19:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:19:37,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2020-10-28 13:19:37,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:37,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:37,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:37,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:19:37,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:37,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:19:37,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:37,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:37,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:19:37,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:37,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:37,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2020-10-28 13:19:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:37,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:37,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:19:37,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:37,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:19:37,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:37,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:37,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:19:37,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:37,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:38,606 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 171 proven. 203 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-10-28 13:19:38,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1175197579] [2020-10-28 13:19:38,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:38,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:38,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203418633] [2020-10-28 13:19:38,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:38,609 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:38,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:38,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:38,610 INFO L87 Difference]: Start difference. First operand 4563 states and 5540 transitions. Second operand 7 states. [2020-10-28 13:19:43,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:43,719 INFO L93 Difference]: Finished difference Result 9492 states and 11498 transitions. [2020-10-28 13:19:43,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:19:43,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 527 [2020-10-28 13:19:43,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:43,744 INFO L225 Difference]: With dead ends: 9492 [2020-10-28 13:19:43,744 INFO L226 Difference]: Without dead ends: 4935 [2020-10-28 13:19:43,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:19:43,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4935 states. [2020-10-28 13:19:43,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4935 to 4913. [2020-10-28 13:19:43,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4913 states. [2020-10-28 13:19:43,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4913 states to 4913 states and 5922 transitions. [2020-10-28 13:19:43,883 INFO L78 Accepts]: Start accepts. Automaton has 4913 states and 5922 transitions. Word has length 527 [2020-10-28 13:19:43,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:43,884 INFO L481 AbstractCegarLoop]: Abstraction has 4913 states and 5922 transitions. [2020-10-28 13:19:43,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:43,884 INFO L276 IsEmpty]: Start isEmpty. Operand 4913 states and 5922 transitions. [2020-10-28 13:19:43,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2020-10-28 13:19:43,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:43,904 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:43,904 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:19:43,904 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:43,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:43,905 INFO L82 PathProgramCache]: Analyzing trace with hash -13998195, now seen corresponding path program 1 times [2020-10-28 13:19:43,906 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:43,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793453250] [2020-10-28 13:19:43,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:44,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:44,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:45,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:49,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:49,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 627 [2020-10-28 13:19:49,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:19:49,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4984 [2020-10-28 13:19:49,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:49,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:19:49,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:19:49,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:19:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:49,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:49,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:49,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:19:49,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:49,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:19:49,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:49,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:49,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:49,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:49,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:49,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:49,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:19:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:49,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:49,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:19:49,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-28 13:19:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:49,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:19:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:19:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:19:49,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:49,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:19:49,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:49,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:49,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:49,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 13:19:49,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:49,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:19:49,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:49,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:19:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:19:49,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-28 13:19:49,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2020-10-28 13:19:49,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:49,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:49,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:19:49,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:19:49,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:19:49,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:19:49,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:19:49,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:19:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:19:49,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:19:49,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:19:49,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:19:50,245 INFO L134 CoverageAnalysis]: Checked inductivity of 622 backedges. 335 proven. 143 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-28 13:19:50,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793453250] [2020-10-28 13:19:50,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:19:50,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:19:50,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267040975] [2020-10-28 13:19:50,247 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:19:50,247 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:19:50,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:19:50,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:19:50,248 INFO L87 Difference]: Start difference. First operand 4913 states and 5922 transitions. Second operand 7 states. [2020-10-28 13:19:56,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:19:56,334 INFO L93 Difference]: Finished difference Result 11548 states and 14296 transitions. [2020-10-28 13:19:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:19:56,335 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 611 [2020-10-28 13:19:56,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:19:56,362 INFO L225 Difference]: With dead ends: 11548 [2020-10-28 13:19:56,362 INFO L226 Difference]: Without dead ends: 6641 [2020-10-28 13:19:56,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:19:56,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6641 states. [2020-10-28 13:19:56,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6641 to 6278. [2020-10-28 13:19:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6278 states. [2020-10-28 13:19:56,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6278 states to 6278 states and 7699 transitions. [2020-10-28 13:19:56,538 INFO L78 Accepts]: Start accepts. Automaton has 6278 states and 7699 transitions. Word has length 611 [2020-10-28 13:19:56,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:19:56,539 INFO L481 AbstractCegarLoop]: Abstraction has 6278 states and 7699 transitions. [2020-10-28 13:19:56,539 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:19:56,540 INFO L276 IsEmpty]: Start isEmpty. Operand 6278 states and 7699 transitions. [2020-10-28 13:19:56,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 761 [2020-10-28 13:19:56,571 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:19:56,572 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:19:56,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:19:56,573 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:19:56,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:19:56,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1533656315, now seen corresponding path program 1 times [2020-10-28 13:19:56,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:19:56,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47949485] [2020-10-28 13:19:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:19:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:19:56,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:56,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:57,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:19:58,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:01,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:01,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 780 [2020-10-28 13:20:01,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:20:01,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5091 [2020-10-28 13:20:01,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:01,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-28 13:20:01,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:20:01,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:01,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:01,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:01,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:01,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:01,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:01,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:01,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:20:01,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:01,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:01,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:01,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:01,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:01,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:01,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:01,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:02,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:02,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-28 13:20:02,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-28 13:20:02,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:02,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:20:02,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:02,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 13:20:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:02,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:02,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:20:02,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:02,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-28 13:20:02,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:02,371 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:02,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:20:02,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:02,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-28 13:20:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:02,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:02,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:02,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:20:02,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:02,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:20:02,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:02,546 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:20:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:02,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:02,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 417 [2020-10-28 13:20:02,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:02,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:02,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:02,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:20:02,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:02,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:20:02,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:02,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:20:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:02,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:02,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 561 [2020-10-28 13:20:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:02,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:02,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:02,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:20:02,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:02,751 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 13:20:02,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:02,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:20:02,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:02,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:03,275 INFO L134 CoverageAnalysis]: Checked inductivity of 1262 backedges. 385 proven. 348 refuted. 0 times theorem prover too weak. 529 trivial. 0 not checked. [2020-10-28 13:20:03,276 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47949485] [2020-10-28 13:20:03,276 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:03,277 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:03,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27499140] [2020-10-28 13:20:03,278 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:03,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:03,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:03,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:03,279 INFO L87 Difference]: Start difference. First operand 6278 states and 7699 transitions. Second operand 7 states. [2020-10-28 13:20:08,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:08,698 INFO L93 Difference]: Finished difference Result 13612 states and 16599 transitions. [2020-10-28 13:20:08,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:20:08,704 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 760 [2020-10-28 13:20:08,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:08,724 INFO L225 Difference]: With dead ends: 13612 [2020-10-28 13:20:08,724 INFO L226 Difference]: Without dead ends: 6239 [2020-10-28 13:20:08,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:20:08,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6239 states. [2020-10-28 13:20:08,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6239 to 6202. [2020-10-28 13:20:08,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6202 states. [2020-10-28 13:20:08,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6202 states to 6202 states and 6621 transitions. [2020-10-28 13:20:08,933 INFO L78 Accepts]: Start accepts. Automaton has 6202 states and 6621 transitions. Word has length 760 [2020-10-28 13:20:08,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:08,934 INFO L481 AbstractCegarLoop]: Abstraction has 6202 states and 6621 transitions. [2020-10-28 13:20:08,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 6202 states and 6621 transitions. [2020-10-28 13:20:08,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 806 [2020-10-28 13:20:08,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:08,951 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-28 13:20:08,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:20:08,952 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:08,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:08,953 INFO L82 PathProgramCache]: Analyzing trace with hash -593025485, now seen corresponding path program 1 times [2020-10-28 13:20:08,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:08,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [632963623] [2020-10-28 13:20:08,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:09,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:09,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:09,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:09,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:11,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:14,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:14,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-10-28 13:20:14,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:20:14,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 13:20:14,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:14,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:14,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-28 13:20:14,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-28 13:20:14,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:14,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:14,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:14,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:14,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:14,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:14,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:14,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:20:14,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:14,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:14,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:14,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:14,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:14,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:20:14,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:14,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:14,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:14,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:20:14,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:14,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-28 13:20:14,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:14,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:14,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:14,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:14,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 13:20:14,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:20:14,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 13:20:14,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:14,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:14,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:14,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-28 13:20:14,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:14,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-28 13:20:14,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:14,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:14,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:14,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 13:20:14,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:20:15,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2020-10-28 13:20:15,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:15,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:15,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:15,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-28 13:20:15,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:15,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:20:15,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:15,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-28 13:20:15,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:15,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:15,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-28 13:20:15,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:15,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:15,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:15,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-28 13:20:15,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:15,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-28 13:20:15,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:15,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-28 13:20:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:15,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:15,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 606 [2020-10-28 13:20:15,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:15,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:15,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:20:15,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:15,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:20:15,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:15,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-28 13:20:15,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:16,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 394 proven. 414 refuted. 0 times theorem prover too weak. 710 trivial. 0 not checked. [2020-10-28 13:20:16,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [632963623] [2020-10-28 13:20:16,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:16,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:16,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496751315] [2020-10-28 13:20:16,491 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:16,491 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:16,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:16,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:16,492 INFO L87 Difference]: Start difference. First operand 6202 states and 6621 transitions. Second operand 7 states. [2020-10-28 13:20:20,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:20,398 INFO L93 Difference]: Finished difference Result 17869 states and 19242 transitions. [2020-10-28 13:20:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:20:20,400 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 805 [2020-10-28 13:20:20,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:20,433 INFO L225 Difference]: With dead ends: 17869 [2020-10-28 13:20:20,433 INFO L226 Difference]: Without dead ends: 11334 [2020-10-28 13:20:20,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:20:20,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11334 states. [2020-10-28 13:20:20,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11334 to 10650. [2020-10-28 13:20:20,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10650 states. [2020-10-28 13:20:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10650 states to 10650 states and 11455 transitions. [2020-10-28 13:20:20,694 INFO L78 Accepts]: Start accepts. Automaton has 10650 states and 11455 transitions. Word has length 805 [2020-10-28 13:20:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:20,695 INFO L481 AbstractCegarLoop]: Abstraction has 10650 states and 11455 transitions. [2020-10-28 13:20:20,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:20,695 INFO L276 IsEmpty]: Start isEmpty. Operand 10650 states and 11455 transitions. [2020-10-28 13:20:20,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 988 [2020-10-28 13:20:20,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:20,722 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:20,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:20:20,722 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:20,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:20,723 INFO L82 PathProgramCache]: Analyzing trace with hash 881169801, now seen corresponding path program 1 times [2020-10-28 13:20:20,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:20,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412552369] [2020-10-28 13:20:20,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:20,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:21,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:21,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:23,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:25,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:25,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1007 [2020-10-28 13:20:25,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:20:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 13:20:25,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:25,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:25,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:20:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 252 [2020-10-28 13:20:25,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:26,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:26,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:26,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:26,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:26,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:26,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:20:26,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:26,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:26,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:26,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:26,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:26,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:26,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:26,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:26,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:26,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:26,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:26,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-28 13:20:26,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:26,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:26,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:20:26,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:26,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:26,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:26,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:26,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:26,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-28 13:20:26,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-28 13:20:26,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:26,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:26,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-28 13:20:26,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:27,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-28 13:20:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:27,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:27,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:27,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:20:27,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:20:27,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:27,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:20:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:27,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 565 [2020-10-28 13:20:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:27,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:27,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:27,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:20:27,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:20:27,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:27,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:20:27,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:27,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:27,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 680 [2020-10-28 13:20:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:27,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:27,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:27,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:20:27,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:27,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-28 13:20:27,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:27,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-28 13:20:27,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:27,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:28,266 INFO L134 CoverageAnalysis]: Checked inductivity of 1633 backedges. 533 proven. 426 refuted. 0 times theorem prover too weak. 674 trivial. 0 not checked. [2020-10-28 13:20:28,266 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412552369] [2020-10-28 13:20:28,266 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:28,266 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:28,267 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64639488] [2020-10-28 13:20:28,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:28,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:28,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:28,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:28,269 INFO L87 Difference]: Start difference. First operand 10650 states and 11455 transitions. Second operand 7 states. [2020-10-28 13:20:32,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:32,496 INFO L93 Difference]: Finished difference Result 25031 states and 27072 transitions. [2020-10-28 13:20:32,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:20:32,502 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 987 [2020-10-28 13:20:32,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:32,545 INFO L225 Difference]: With dead ends: 25031 [2020-10-28 13:20:32,545 INFO L226 Difference]: Without dead ends: 14724 [2020-10-28 13:20:32,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:20:32,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14724 states. [2020-10-28 13:20:32,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14724 to 14379. [2020-10-28 13:20:32,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14379 states. [2020-10-28 13:20:32,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14379 states to 14379 states and 15442 transitions. [2020-10-28 13:20:32,878 INFO L78 Accepts]: Start accepts. Automaton has 14379 states and 15442 transitions. Word has length 987 [2020-10-28 13:20:32,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:32,879 INFO L481 AbstractCegarLoop]: Abstraction has 14379 states and 15442 transitions. [2020-10-28 13:20:32,879 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:32,879 INFO L276 IsEmpty]: Start isEmpty. Operand 14379 states and 15442 transitions. [2020-10-28 13:20:32,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1030 [2020-10-28 13:20:32,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:32,912 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:32,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:20:32,912 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:32,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:32,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1759600300, now seen corresponding path program 1 times [2020-10-28 13:20:32,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:32,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589351354] [2020-10-28 13:20:32,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:33,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:33,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:38,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:38,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1051 [2020-10-28 13:20:38,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:20:38,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5079 [2020-10-28 13:20:38,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:38,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-28 13:20:38,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 13:20:38,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:38,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:38,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:38,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:38,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:38,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:20:38,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:38,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:38,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:38,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:38,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:38,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:38,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:38,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:38,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:38,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:38,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:38,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:20:38,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:38,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-28 13:20:38,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:38,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:38,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:38,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:38,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:20:38,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:38,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:20:38,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:38,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:38,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-28 13:20:38,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:38,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 409 [2020-10-28 13:20:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:39,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:39,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:39,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:20:39,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:39,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-10-28 13:20:39,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:39,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-28 13:20:39,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:39,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:39,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 538 [2020-10-28 13:20:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:39,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:39,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:39,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:20:39,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:39,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 13:20:39,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:39,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:39,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:20:39,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:39,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:39,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 607 [2020-10-28 13:20:39,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:39,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:39,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:39,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:20:39,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:39,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-28 13:20:39,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:39,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:20:39,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:39,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:39,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2020-10-28 13:20:39,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:39,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:39,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:39,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:20:39,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-28 13:20:39,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:39,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-28 13:20:39,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:39,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:40,588 INFO L134 CoverageAnalysis]: Checked inductivity of 2097 backedges. 517 proven. 465 refuted. 0 times theorem prover too weak. 1115 trivial. 0 not checked. [2020-10-28 13:20:40,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589351354] [2020-10-28 13:20:40,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:40,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:40,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397135433] [2020-10-28 13:20:40,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:40,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:40,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:40,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:40,591 INFO L87 Difference]: Start difference. First operand 14379 states and 15442 transitions. Second operand 7 states. [2020-10-28 13:20:45,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:45,310 INFO L93 Difference]: Finished difference Result 28768 states and 30947 transitions. [2020-10-28 13:20:45,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:20:45,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1029 [2020-10-28 13:20:45,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:45,356 INFO L225 Difference]: With dead ends: 28768 [2020-10-28 13:20:45,356 INFO L226 Difference]: Without dead ends: 14732 [2020-10-28 13:20:45,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:20:45,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14732 states. [2020-10-28 13:20:45,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14732 to 14387. [2020-10-28 13:20:45,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14387 states. [2020-10-28 13:20:45,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14387 states to 14387 states and 15392 transitions. [2020-10-28 13:20:45,680 INFO L78 Accepts]: Start accepts. Automaton has 14387 states and 15392 transitions. Word has length 1029 [2020-10-28 13:20:45,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:45,681 INFO L481 AbstractCegarLoop]: Abstraction has 14387 states and 15392 transitions. [2020-10-28 13:20:45,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:45,682 INFO L276 IsEmpty]: Start isEmpty. Operand 14387 states and 15392 transitions. [2020-10-28 13:20:45,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1091 [2020-10-28 13:20:45,713 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:45,716 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:45,716 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:20:45,717 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:45,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:45,717 INFO L82 PathProgramCache]: Analyzing trace with hash -576672134, now seen corresponding path program 1 times [2020-10-28 13:20:45,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:45,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380320369] [2020-10-28 13:20:45,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:45,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:46,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:46,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:46,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:50,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:50,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1112 [2020-10-28 13:20:50,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:20:50,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-28 13:20:50,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:50,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:50,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:50,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-28 13:20:50,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:20:50,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:51,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:20:51,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:51,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:51,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:51,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:20:51,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:20:51,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:51,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:51,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:51,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:51,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:20:51,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:51,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:51,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:51,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:20:51,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-28 13:20:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:51,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:51,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:51,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:51,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:20:51,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:51,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:51,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:51,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-28 13:20:51,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:51,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:20:51,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:51,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:20:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:20:51,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-28 13:20:51,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:51,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-28 13:20:51,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:51,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:51,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:51,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:20:51,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:51,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:20:51,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:51,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:20:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:20:51,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:20:51,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:51,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-28 13:20:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:51,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:51,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:51,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:20:51,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:51,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-28 13:20:51,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:51,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:20:51,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:51,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:51,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2020-10-28 13:20:51,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:51,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:51,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:51,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:20:51,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:51,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:20:51,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:51,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:20:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:51,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:51,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 783 [2020-10-28 13:20:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:51,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:52,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:20:52,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:20:52,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:20:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-28 13:20:52,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:20:52,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:20:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:20:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-28 13:20:52,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:20:52,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:20:53,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2219 backedges. 623 proven. 306 refuted. 0 times theorem prover too weak. 1290 trivial. 0 not checked. [2020-10-28 13:20:53,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380320369] [2020-10-28 13:20:53,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:20:53,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:20:53,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174515962] [2020-10-28 13:20:53,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:20:53,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:20:53,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:20:53,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:20:53,204 INFO L87 Difference]: Start difference. First operand 14387 states and 15392 transitions. Second operand 7 states. [2020-10-28 13:20:57,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:20:57,897 INFO L93 Difference]: Finished difference Result 30139 states and 32261 transitions. [2020-10-28 13:20:57,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:20:57,903 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1090 [2020-10-28 13:20:57,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:20:57,950 INFO L225 Difference]: With dead ends: 30139 [2020-10-28 13:20:57,950 INFO L226 Difference]: Without dead ends: 16095 [2020-10-28 13:20:57,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:20:57,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16095 states. [2020-10-28 13:20:58,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16095 to 15752. [2020-10-28 13:20:58,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15752 states. [2020-10-28 13:20:58,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15752 states to 15752 states and 16814 transitions. [2020-10-28 13:20:58,280 INFO L78 Accepts]: Start accepts. Automaton has 15752 states and 16814 transitions. Word has length 1090 [2020-10-28 13:20:58,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:20:58,281 INFO L481 AbstractCegarLoop]: Abstraction has 15752 states and 16814 transitions. [2020-10-28 13:20:58,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:20:58,281 INFO L276 IsEmpty]: Start isEmpty. Operand 15752 states and 16814 transitions. [2020-10-28 13:20:58,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1093 [2020-10-28 13:20:58,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:20:58,312 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:20:58,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:20:58,312 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:20:58,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:20:58,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1403570762, now seen corresponding path program 1 times [2020-10-28 13:20:58,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:20:58,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225852934] [2020-10-28 13:20:58,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:20:58,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:20:58,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:20:59,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:03,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:03,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:03,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1114 [2020-10-28 13:21:03,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:21:03,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-28 13:21:03,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:03,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-28 13:21:03,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-28 13:21:03,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:03,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:03,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:03,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:03,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:03,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:03,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:03,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:21:03,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:03,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:03,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:03,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:03,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:03,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:03,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:03,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:03,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-28 13:21:03,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:03,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:21:03,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:03,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:03,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:03,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:03,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:03,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-28 13:21:03,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:03,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 13:21:04,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-28 13:21:04,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-28 13:21:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:04,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-28 13:21:04,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:04,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:21:04,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:04,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:21:04,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:04,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 13:21:04,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:04,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-28 13:21:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:04,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:21:04,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:04,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:21:04,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-28 13:21:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:04,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 670 [2020-10-28 13:21:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:04,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:21:04,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:04,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:21:04,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-28 13:21:04,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:04,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:04,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 785 [2020-10-28 13:21:04,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:04,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:04,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:04,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:21:04,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:04,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-28 13:21:04,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:04,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:04,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:04,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 248 [2020-10-28 13:21:04,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:04,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:05,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2223 backedges. 623 proven. 306 refuted. 0 times theorem prover too weak. 1294 trivial. 0 not checked. [2020-10-28 13:21:05,674 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225852934] [2020-10-28 13:21:05,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:05,675 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:05,675 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895063579] [2020-10-28 13:21:05,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:05,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:05,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:05,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:05,679 INFO L87 Difference]: Start difference. First operand 15752 states and 16814 transitions. Second operand 7 states. [2020-10-28 13:21:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:09,823 INFO L93 Difference]: Finished difference Result 35901 states and 38510 transitions. [2020-10-28 13:21:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:21:09,824 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1092 [2020-10-28 13:21:09,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:09,876 INFO L225 Difference]: With dead ends: 35901 [2020-10-28 13:21:09,876 INFO L226 Difference]: Without dead ends: 20492 [2020-10-28 13:21:09,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:21:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20492 states. [2020-10-28 13:21:10,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20492 to 19138. [2020-10-28 13:21:10,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19138 states. [2020-10-28 13:21:10,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19138 states to 19138 states and 20526 transitions. [2020-10-28 13:21:10,400 INFO L78 Accepts]: Start accepts. Automaton has 19138 states and 20526 transitions. Word has length 1092 [2020-10-28 13:21:10,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:10,401 INFO L481 AbstractCegarLoop]: Abstraction has 19138 states and 20526 transitions. [2020-10-28 13:21:10,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:10,402 INFO L276 IsEmpty]: Start isEmpty. Operand 19138 states and 20526 transitions. [2020-10-28 13:21:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1139 [2020-10-28 13:21:10,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:10,439 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:21:10,439 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:21:10,439 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:10,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:10,440 INFO L82 PathProgramCache]: Analyzing trace with hash -311240681, now seen corresponding path program 1 times [2020-10-28 13:21:10,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:10,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057479147] [2020-10-28 13:21:10,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:10,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:11,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:14,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:15,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:15,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1162 [2020-10-28 13:21:15,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:21:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-28 13:21:15,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:15,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:21:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 843 [2020-10-28 13:21:15,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 315 [2020-10-28 13:21:15,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:16,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:16,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:16,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:16,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:16,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:16,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:16,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 13:21:16,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:16,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:16,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:16,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:16,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:16,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:16,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:16,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:16,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:21:16,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:16,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:21:16,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:16,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:16,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:16,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:16,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:16,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:21:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:16,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:16,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:16,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:21:16,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:21:16,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:16,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:16,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:16,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:16,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:21:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:16,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:16,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:16,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:21:16,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:16,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:21:16,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:16,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:16,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:16,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:16,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:16,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:16,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:21:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:16,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:16,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:16,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:21:16,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:16,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-28 13:21:16,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:16,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:16,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:16,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:16,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:16,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:16,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:21:16,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:16,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:16,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:16,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:21:16,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:16,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:21:16,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:16,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:16,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:16,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:16,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:16,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-28 13:21:16,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:16,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:16,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:16,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:21:16,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-28 13:21:16,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:16,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:16,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:21:16,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:16,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-28 13:21:16,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:16,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:16,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:17,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:17,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:21:17,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:21:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-28 13:21:17,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:17,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 245 [2020-10-28 13:21:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:17,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2737 backedges. 437 proven. 7 refuted. 0 times theorem prover too weak. 2293 trivial. 0 not checked. [2020-10-28 13:21:17,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057479147] [2020-10-28 13:21:17,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:17,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:21:17,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127972224] [2020-10-28 13:21:17,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:21:17,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:17,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:21:17,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:21:17,942 INFO L87 Difference]: Start difference. First operand 19138 states and 20526 transitions. Second operand 5 states. [2020-10-28 13:21:21,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:21,306 INFO L93 Difference]: Finished difference Result 37937 states and 40709 transitions. [2020-10-28 13:21:21,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:21:21,306 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1138 [2020-10-28 13:21:21,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:21,349 INFO L225 Difference]: With dead ends: 37937 [2020-10-28 13:21:21,349 INFO L226 Difference]: Without dead ends: 19142 [2020-10-28 13:21:21,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:21:21,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19142 states. [2020-10-28 13:21:21,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19142 to 18125. [2020-10-28 13:21:21,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18125 states. [2020-10-28 13:21:21,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18125 states to 18125 states and 19300 transitions. [2020-10-28 13:21:21,876 INFO L78 Accepts]: Start accepts. Automaton has 18125 states and 19300 transitions. Word has length 1138 [2020-10-28 13:21:21,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:21,877 INFO L481 AbstractCegarLoop]: Abstraction has 18125 states and 19300 transitions. [2020-10-28 13:21:21,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:21:21,878 INFO L276 IsEmpty]: Start isEmpty. Operand 18125 states and 19300 transitions. [2020-10-28 13:21:21,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1447 [2020-10-28 13:21:21,935 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:21,936 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:21:21,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:21:21,936 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:21,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:21,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1974933295, now seen corresponding path program 1 times [2020-10-28 13:21:21,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:21,937 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [630232168] [2020-10-28 13:21:21,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:22,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:22,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:22,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:25,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:27,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:27,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1474 [2020-10-28 13:21:27,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:21:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-28 13:21:27,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:27,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 843 [2020-10-28 13:21:27,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-28 13:21:27,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:27,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:27,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:27,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:27,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:27,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:27,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:21:27,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:27,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:27,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:27,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:27,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:27,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:27,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:27,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:21:27,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:27,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:21:27,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:27,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:27,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:27,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:27,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:21:27,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:27,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:27,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:21:27,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:21:27,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:27,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:21:27,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:27,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:27,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:27,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:21:27,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:27,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 13:21:27,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:27,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:27,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:27,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:27,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:27,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:21:27,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:27,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:27,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:27,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:21:27,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:27,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:21:27,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:27,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:27,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:27,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:27,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:21:27,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:27,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:27,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:27,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:21:27,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:21:27,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:27,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:27,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-28 13:21:27,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:27,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:27,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 13:21:27,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-28 13:21:27,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:27,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:27,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:27,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 13:21:27,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:28,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 831 [2020-10-28 13:21:28,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:28,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:28,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:28,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:21:28,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-28 13:21:28,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:28,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:28,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-28 13:21:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:28,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1081 [2020-10-28 13:21:28,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:28,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:28,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:28,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:21:28,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:28,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-28 13:21:28,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:28,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-28 13:21:28,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:28,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:28,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1191 [2020-10-28 13:21:28,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:28,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:28,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:28,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 13:21:28,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:28,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 13:21:28,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:28,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:28,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:21:28,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:28,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:30,508 INFO L134 CoverageAnalysis]: Checked inductivity of 4653 backedges. 1391 proven. 304 refuted. 0 times theorem prover too weak. 2958 trivial. 0 not checked. [2020-10-28 13:21:30,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [630232168] [2020-10-28 13:21:30,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:30,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:30,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243072411] [2020-10-28 13:21:30,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:30,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:30,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:30,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:30,511 INFO L87 Difference]: Start difference. First operand 18125 states and 19300 transitions. Second operand 7 states. [2020-10-28 13:21:35,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:35,068 INFO L93 Difference]: Finished difference Result 36252 states and 38604 transitions. [2020-10-28 13:21:35,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:21:35,069 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1446 [2020-10-28 13:21:35,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:35,110 INFO L225 Difference]: With dead ends: 36252 [2020-10-28 13:21:35,110 INFO L226 Difference]: Without dead ends: 18470 [2020-10-28 13:21:35,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:21:35,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18470 states. [2020-10-28 13:21:35,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18470 to 18464. [2020-10-28 13:21:35,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18464 states. [2020-10-28 13:21:35,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18464 states to 18464 states and 19643 transitions. [2020-10-28 13:21:35,500 INFO L78 Accepts]: Start accepts. Automaton has 18464 states and 19643 transitions. Word has length 1446 [2020-10-28 13:21:35,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:35,501 INFO L481 AbstractCegarLoop]: Abstraction has 18464 states and 19643 transitions. [2020-10-28 13:21:35,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:35,501 INFO L276 IsEmpty]: Start isEmpty. Operand 18464 states and 19643 transitions. [2020-10-28 13:21:35,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1478 [2020-10-28 13:21:35,544 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:35,545 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 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, 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] [2020-10-28 13:21:35,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:21:35,546 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:35,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:35,547 INFO L82 PathProgramCache]: Analyzing trace with hash 915557549, now seen corresponding path program 1 times [2020-10-28 13:21:35,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:35,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [512388294] [2020-10-28 13:21:35,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:35,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:35,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:36,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:40,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:40,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1505 [2020-10-28 13:21:40,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:21:40,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5153 [2020-10-28 13:21:40,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:40,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:40,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1238 [2020-10-28 13:21:40,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:21:40,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:41,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:21:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:41,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:41,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:41,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:21:41,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:41,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:21:41,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:41,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:41,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:41,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:21:41,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:41,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:41,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-28 13:21:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:41,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:21:41,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:41,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:41,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-28 13:21:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:41,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:41,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:41,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:21:41,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:41,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 13:21:41,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:41,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:41,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:41,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:41,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:41,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:41,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-28 13:21:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:41,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:41,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:41,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-28 13:21:41,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:41,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:21:41,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:41,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:41,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:41,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:41,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-28 13:21:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:41,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:41,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:41,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:21:41,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:41,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 13:21:41,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:41,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:41,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:41,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-28 13:21:41,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:41,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:41,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:41,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 13:21:41,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:41,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-28 13:21:41,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:41,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-28 13:21:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-28 13:21:42,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:42,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:42,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:42,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 13:21:42,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 13:21:42,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:42,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:42,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:42,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 924 [2020-10-28 13:21:42,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:42,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:42,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:42,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-10-28 13:21:42,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:42,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-28 13:21:42,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:42,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:21:42,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:21:42,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:42,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-28 13:21:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:42,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:42,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:42,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-28 13:21:42,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:42,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:21:42,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:42,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:21:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:21:42,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-28 13:21:42,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:42,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1222 [2020-10-28 13:21:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:42,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:21:42,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-28 13:21:42,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:21:42,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-28 13:21:42,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:21:42,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:21:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:21:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:21:42,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-28 13:21:42,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:21:43,957 INFO L134 CoverageAnalysis]: Checked inductivity of 4982 backedges. 1689 proven. 2 refuted. 0 times theorem prover too weak. 3291 trivial. 0 not checked. [2020-10-28 13:21:43,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [512388294] [2020-10-28 13:21:43,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:21:43,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:21:43,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86950467] [2020-10-28 13:21:43,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:21:43,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:21:43,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:21:43,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:21:43,960 INFO L87 Difference]: Start difference. First operand 18464 states and 19643 transitions. Second operand 7 states. [2020-10-28 13:21:48,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:21:48,491 INFO L93 Difference]: Finished difference Result 39329 states and 41917 transitions. [2020-10-28 13:21:48,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:21:48,492 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1477 [2020-10-28 13:21:48,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:21:48,525 INFO L225 Difference]: With dead ends: 39329 [2020-10-28 13:21:48,525 INFO L226 Difference]: Without dead ends: 19147 [2020-10-28 13:21:48,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:21:48,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19147 states. [2020-10-28 13:21:48,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19147 to 19111. [2020-10-28 13:21:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19111 states. [2020-10-28 13:21:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19111 states to 19111 states and 20144 transitions. [2020-10-28 13:21:48,897 INFO L78 Accepts]: Start accepts. Automaton has 19111 states and 20144 transitions. Word has length 1477 [2020-10-28 13:21:48,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:21:48,898 INFO L481 AbstractCegarLoop]: Abstraction has 19111 states and 20144 transitions. [2020-10-28 13:21:48,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:21:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 19111 states and 20144 transitions. [2020-10-28 13:21:48,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1648 [2020-10-28 13:21:48,941 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:21:48,942 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:21:48,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 13:21:48,943 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:21:48,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:21:48,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1141013581, now seen corresponding path program 1 times [2020-10-28 13:21:48,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:21:48,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1701304643] [2020-10-28 13:21:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:21:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:21:49,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:49,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:21:50,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking...