/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/Problem18_label09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:47:56,718 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:47:56,723 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:47:56,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:47:56,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:47:56,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:47:56,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:47:56,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:47:56,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:47:56,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:47:56,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:47:56,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:47:56,826 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:47:56,830 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:47:56,833 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:47:56,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:47:56,837 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:47:56,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:47:56,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:47:56,865 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:47:56,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:47:56,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:47:56,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:47:56,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:47:56,889 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:47:56,890 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:47:56,890 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:47:56,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:47:56,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:47:56,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:47:56,896 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:47:56,897 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:47:56,900 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:47:56,901 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:47:56,902 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:47:56,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:47:56,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:47:56,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:47:56,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:47:56,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:47:56,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:47:56,916 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 13:47:56,977 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:47:56,978 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:47:56,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:47:56,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:47:56,984 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:47:56,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:47:56,984 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:47:56,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:47:56,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:47:56,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:47:56,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:47:56,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:47:56,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:47:56,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:47:56,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:47:56,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:47:56,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:47:56,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:47:56,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:47:56,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:47:56,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:47:56,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:47:56,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:47:56,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:47:56,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:47:56,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:47:56,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:47:56,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:47:56,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:47:56,991 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:47:57,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:47:57,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:47:57,493 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:47:57,494 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:47:57,495 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:47:57,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label09.c [2020-10-28 13:47:57,592 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c11ab5ce/792815f9a0014853baf1d9d778a70030/FLAG299f85300 [2020-10-28 13:47:58,714 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:47:58,715 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label09.c [2020-10-28 13:47:58,753 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c11ab5ce/792815f9a0014853baf1d9d778a70030/FLAG299f85300 [2020-10-28 13:47:59,151 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c11ab5ce/792815f9a0014853baf1d9d778a70030 [2020-10-28 13:47:59,156 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:47:59,165 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:47:59,170 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:47:59,171 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:47:59,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:47:59,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:47:59" (1/1) ... [2020-10-28 13:47:59,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5ba39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:47:59, skipping insertion in model container [2020-10-28 13:47:59,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:47:59" (1/1) ... [2020-10-28 13:47:59,191 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:47:59,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:48:00,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:48:00,498 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:48:01,080 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:48:01,116 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:48:01,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:48:01 WrapperNode [2020-10-28 13:48:01,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:48:01,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:48:01,119 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:48:01,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:48:01,136 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:48:01" (1/1) ... [2020-10-28 13:48:01,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:48:01" (1/1) ... [2020-10-28 13:48:01,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:48:01" (1/1) ... [2020-10-28 13:48:01,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:48:01" (1/1) ... [2020-10-28 13:48:01,443 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:48:01" (1/1) ... [2020-10-28 13:48:01,485 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:48:01" (1/1) ... [2020-10-28 13:48:01,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:48:01" (1/1) ... [2020-10-28 13:48:01,559 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:48:01,561 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:48:01,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:48:01,562 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:48:01,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:48:01" (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 13:48:01,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:48:01,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:48:01,654 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:48:01,654 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:48:01,654 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:48:01,655 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 13:48:01,655 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:48:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:48:01,655 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:48:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 13:48:01,656 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:48:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:48:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:48:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:48:01,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:48:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:48:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:48:01,658 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:48:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:48:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:48:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:48:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:48:01,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:48:06,171 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:48:06,171 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:48:06,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:48:06 BoogieIcfgContainer [2020-10-28 13:48:06,178 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:48:06,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:48:06,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:48:06,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:48:06,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:47:59" (1/3) ... [2020-10-28 13:48:06,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e26c3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:48:06, skipping insertion in model container [2020-10-28 13:48:06,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:48:01" (2/3) ... [2020-10-28 13:48:06,189 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e26c3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:48:06, skipping insertion in model container [2020-10-28 13:48:06,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:48:06" (3/3) ... [2020-10-28 13:48:06,192 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label09.c [2020-10-28 13:48:06,205 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:48:06,212 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:48:06,227 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:48:06,283 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:48:06,284 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:48:06,284 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:48:06,284 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:48:06,284 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:48:06,284 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:48:06,285 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:48:06,285 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:48:06,333 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-28 13:48:06,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 13:48:06,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:48:06,341 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:48:06,342 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:48:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:48:06,351 INFO L82 PathProgramCache]: Analyzing trace with hash 543196736, now seen corresponding path program 1 times [2020-10-28 13:48:06,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:48:06,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574992589] [2020-10-28 13:48:06,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:48:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:06,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:06,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:06,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 13:48:06,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:06,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 432 [2020-10-28 13:48:06,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:06,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:48:06,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:48:06,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 13:48:06,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:48:07,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:48:07,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:07,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:07,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:07,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:48:07,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:07,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-28 13:48:07,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:07,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:48:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:07,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:48:07,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:48:07,221 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 13:48:07,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [574992589] [2020-10-28 13:48:07,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:48:07,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 13:48:07,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905117338] [2020-10-28 13:48:07,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:48:07,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:48:07,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:48:07,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:48:07,264 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 5 states. [2020-10-28 13:48:21,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:48:21,564 INFO L93 Difference]: Finished difference Result 2989 states and 5773 transitions. [2020-10-28 13:48:21,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:48:21,567 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-10-28 13:48:21,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:48:21,633 INFO L225 Difference]: With dead ends: 2989 [2020-10-28 13:48:21,633 INFO L226 Difference]: Without dead ends: 2143 [2020-10-28 13:48:21,645 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 13:48:21,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-28 13:48:21,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2136. [2020-10-28 13:48:21,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2020-10-28 13:48:21,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3564 transitions. [2020-10-28 13:48:21,812 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3564 transitions. Word has length 17 [2020-10-28 13:48:21,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:48:21,812 INFO L481 AbstractCegarLoop]: Abstraction has 2136 states and 3564 transitions. [2020-10-28 13:48:21,813 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:48:21,813 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3564 transitions. [2020-10-28 13:48:21,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-28 13:48:21,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:48:21,818 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:48:21,818 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:48:21,818 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:48:21,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:48:21,819 INFO L82 PathProgramCache]: Analyzing trace with hash 1026150969, now seen corresponding path program 1 times [2020-10-28 13:48:21,819 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:48:21,820 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90037140] [2020-10-28 13:48:21,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:48:21,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:21,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:22,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:22,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 13:48:22,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-28 13:48:22,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:22,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:48:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:48:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:48:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:48:22,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:48:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:22,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:22,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:22,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:48:22,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:22,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:48:22,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:22,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:48:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:22,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:48:22,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 13:48:22,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:48:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:22,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:22,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:22,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:48:22,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:22,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-28 13:48:22,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:22,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:48:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:48:22,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:48:22,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:22,835 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:48:22,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90037140] [2020-10-28 13:48:22,836 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:48:22,836 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 13:48:22,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168322329] [2020-10-28 13:48:22,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:48:22,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:48:22,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:48:22,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:48:22,842 INFO L87 Difference]: Start difference. First operand 2136 states and 3564 transitions. Second operand 8 states. [2020-10-28 13:48:40,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:48:40,138 INFO L93 Difference]: Finished difference Result 8624 states and 14595 transitions. [2020-10-28 13:48:40,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 13:48:40,140 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-10-28 13:48:40,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:48:40,187 INFO L225 Difference]: With dead ends: 8624 [2020-10-28 13:48:40,188 INFO L226 Difference]: Without dead ends: 6494 [2020-10-28 13:48:40,197 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:48:40,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6494 states. [2020-10-28 13:48:40,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6494 to 5759. [2020-10-28 13:48:40,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5759 states. [2020-10-28 13:48:40,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5759 states to 5759 states and 8340 transitions. [2020-10-28 13:48:40,427 INFO L78 Accepts]: Start accepts. Automaton has 5759 states and 8340 transitions. Word has length 87 [2020-10-28 13:48:40,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:48:40,428 INFO L481 AbstractCegarLoop]: Abstraction has 5759 states and 8340 transitions. [2020-10-28 13:48:40,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:48:40,429 INFO L276 IsEmpty]: Start isEmpty. Operand 5759 states and 8340 transitions. [2020-10-28 13:48:40,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 13:48:40,434 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:48:40,435 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:48:40,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:48:40,435 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:48:40,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:48:40,436 INFO L82 PathProgramCache]: Analyzing trace with hash -1665115539, now seen corresponding path program 1 times [2020-10-28 13:48:40,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:48:40,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603261313] [2020-10-28 13:48:40,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:48:40,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:40,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:41,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:41,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 13:48:41,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:48:41,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-28 13:48:41,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:41,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:48:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:48:41,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:48:41,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:48:41,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:48:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:41,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:41,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:41,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:48:41,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:48:41,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:41,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:48:41,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:41,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:48:41,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:41,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:48:41,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:41,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:41,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:41,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:48:41,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:41,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 13:48:41,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:41,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:48:41,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:48:41,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 13:48:41,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:48:41,560 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:48:41,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603261313] [2020-10-28 13:48:41,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:48:41,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:48:41,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718971310] [2020-10-28 13:48:41,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:48:41,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:48:41,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:48:41,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:48:41,564 INFO L87 Difference]: Start difference. First operand 5759 states and 8340 transitions. Second operand 7 states. [2020-10-28 13:48:52,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:48:52,845 INFO L93 Difference]: Finished difference Result 13123 states and 19131 transitions. [2020-10-28 13:48:52,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:48:52,847 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 92 [2020-10-28 13:48:52,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:48:52,888 INFO L225 Difference]: With dead ends: 13123 [2020-10-28 13:48:52,888 INFO L226 Difference]: Without dead ends: 7370 [2020-10-28 13:48:52,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:48:52,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2020-10-28 13:48:53,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 7307. [2020-10-28 13:48:53,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7307 states. [2020-10-28 13:48:53,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7307 states to 7307 states and 9821 transitions. [2020-10-28 13:48:53,119 INFO L78 Accepts]: Start accepts. Automaton has 7307 states and 9821 transitions. Word has length 92 [2020-10-28 13:48:53,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:48:53,120 INFO L481 AbstractCegarLoop]: Abstraction has 7307 states and 9821 transitions. [2020-10-28 13:48:53,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:48:53,120 INFO L276 IsEmpty]: Start isEmpty. Operand 7307 states and 9821 transitions. [2020-10-28 13:48:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-28 13:48:53,122 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:48:53,122 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:48:53,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:48:53,123 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:48:53,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:48:53,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1953405287, now seen corresponding path program 1 times [2020-10-28 13:48:53,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:48:53,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971049653] [2020-10-28 13:48:53,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:48:53,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:53,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:53,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:53,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-28 13:48:53,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:53,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-28 13:48:53,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:53,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:48:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:48:53,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:48:53,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:53,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:48:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:53,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:53,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:53,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:48:53,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:53,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:48:53,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:53,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:48:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:48:53,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:48:53,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:53,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:48:53,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:48:53,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:48:54,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:48:54,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:48:54,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:48:54,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-28 13:48:54,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:48:54,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:48:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:48:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:48:54,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:48:54,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:48:54,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:48:54,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971049653] [2020-10-28 13:48:54,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:48:54,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:48:54,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008257654] [2020-10-28 13:48:54,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:48:54,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:48:54,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:48:54,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:48:54,245 INFO L87 Difference]: Start difference. First operand 7307 states and 9821 transitions. Second operand 7 states. [2020-10-28 13:48:55,241 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:49:05,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:05,175 INFO L93 Difference]: Finished difference Result 15438 states and 20689 transitions. [2020-10-28 13:49:05,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:49:05,183 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-28 13:49:05,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:05,230 INFO L225 Difference]: With dead ends: 15438 [2020-10-28 13:49:05,230 INFO L226 Difference]: Without dead ends: 8137 [2020-10-28 13:49:05,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:49:05,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8137 states. [2020-10-28 13:49:05,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8137 to 8067. [2020-10-28 13:49:05,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8067 states. [2020-10-28 13:49:05,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8067 states to 8067 states and 10663 transitions. [2020-10-28 13:49:05,476 INFO L78 Accepts]: Start accepts. Automaton has 8067 states and 10663 transitions. Word has length 114 [2020-10-28 13:49:05,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:05,476 INFO L481 AbstractCegarLoop]: Abstraction has 8067 states and 10663 transitions. [2020-10-28 13:49:05,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:49:05,477 INFO L276 IsEmpty]: Start isEmpty. Operand 8067 states and 10663 transitions. [2020-10-28 13:49:05,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-28 13:49:05,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:05,490 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:05,490 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:49:05,490 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:05,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:05,491 INFO L82 PathProgramCache]: Analyzing trace with hash 745524257, now seen corresponding path program 1 times [2020-10-28 13:49:05,491 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:05,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772076446] [2020-10-28 13:49:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:05,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:06,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:06,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:06,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-28 13:49:06,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:49:06,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-28 13:49:06,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:06,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:06,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:06,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:49:06,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 13:49:06,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:06,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:06,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:06,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:06,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:06,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:06,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:06,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:49:06,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:06,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:49:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:06,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:49:06,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:06,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:06,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:06,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:06,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:49:06,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:06,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 13:49:06,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:06,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:06,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:49:06,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:06,887 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:49:06,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772076446] [2020-10-28 13:49:06,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:49:06,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:49:06,888 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879879741] [2020-10-28 13:49:06,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:49:06,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:06,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:49:06,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:49:06,890 INFO L87 Difference]: Start difference. First operand 8067 states and 10663 transitions. Second operand 5 states. [2020-10-28 13:49:17,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:17,532 INFO L93 Difference]: Finished difference Result 22597 states and 30892 transitions. [2020-10-28 13:49:17,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:49:17,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-28 13:49:17,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:17,591 INFO L225 Difference]: With dead ends: 22597 [2020-10-28 13:49:17,592 INFO L226 Difference]: Without dead ends: 15238 [2020-10-28 13:49:17,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:49:17,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15238 states. [2020-10-28 13:49:17,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15238 to 14516. [2020-10-28 13:49:17,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14516 states. [2020-10-28 13:49:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14516 states to 14516 states and 18262 transitions. [2020-10-28 13:49:17,974 INFO L78 Accepts]: Start accepts. Automaton has 14516 states and 18262 transitions. Word has length 203 [2020-10-28 13:49:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:17,976 INFO L481 AbstractCegarLoop]: Abstraction has 14516 states and 18262 transitions. [2020-10-28 13:49:17,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:49:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 14516 states and 18262 transitions. [2020-10-28 13:49:17,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 399 [2020-10-28 13:49:17,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:17,987 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:49:17,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:49:17,987 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:17,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:17,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1724227751, now seen corresponding path program 1 times [2020-10-28 13:49:17,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:17,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1600618629] [2020-10-28 13:49:17,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:18,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:18,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:19,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:20,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:22,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:22,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 414 [2020-10-28 13:49:22,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:49:22,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4090 [2020-10-28 13:49:22,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:22,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 196 [2020-10-28 13:49:22,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-28 13:49:22,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:49:22,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:22,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:22,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:22,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:22,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:22,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 13:49:22,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:22,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:49:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:22,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:49:22,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:22,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:22,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:22,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:22,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:22,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-28 13:49:22,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:22,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-28 13:49:22,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:22,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:22,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-28 13:49:22,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:22,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-28 13:49:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:22,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:22,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:22,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:49:22,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:22,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-28 13:49:22,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:22,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:22,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:49:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:49:22,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:23,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-28 13:49:23,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:23,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:23,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:23,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 13:49:23,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:23,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 13:49:23,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:23,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:49:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 13:49:23,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:49:23,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 295 backedges. 150 proven. 72 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 13:49:23,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1600618629] [2020-10-28 13:49:23,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:49:23,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:49:23,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963334686] [2020-10-28 13:49:23,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:49:23,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:23,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:49:23,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:49:23,455 INFO L87 Difference]: Start difference. First operand 14516 states and 18262 transitions. Second operand 8 states. [2020-10-28 13:49:44,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:49:44,256 INFO L93 Difference]: Finished difference Result 31984 states and 39888 transitions. [2020-10-28 13:49:44,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 13:49:44,258 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 398 [2020-10-28 13:49:44,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:49:44,304 INFO L225 Difference]: With dead ends: 31984 [2020-10-28 13:49:44,304 INFO L226 Difference]: Without dead ends: 15965 [2020-10-28 13:49:44,332 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:49:44,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15965 states. [2020-10-28 13:49:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15965 to 14543. [2020-10-28 13:49:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14543 states. [2020-10-28 13:49:44,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14543 states to 14543 states and 15641 transitions. [2020-10-28 13:49:44,630 INFO L78 Accepts]: Start accepts. Automaton has 14543 states and 15641 transitions. Word has length 398 [2020-10-28 13:49:44,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:49:44,631 INFO L481 AbstractCegarLoop]: Abstraction has 14543 states and 15641 transitions. [2020-10-28 13:49:44,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:49:44,631 INFO L276 IsEmpty]: Start isEmpty. Operand 14543 states and 15641 transitions. [2020-10-28 13:49:44,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 774 [2020-10-28 13:49:44,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:49:44,654 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:49:44,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:49:44,654 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:49:44,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:49:44,655 INFO L82 PathProgramCache]: Analyzing trace with hash -545333045, now seen corresponding path program 1 times [2020-10-28 13:49:44,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:49:44,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [42149825] [2020-10-28 13:49:44,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:49:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:44,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:45,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:45,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:49,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:49,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 793 [2020-10-28 13:49:49,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:49:49,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-28 13:49:49,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:49,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:49,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:49,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 535 [2020-10-28 13:49:49,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-28 13:49:49,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:50,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:49:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:50,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:50,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:50,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:49:50,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:50,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:49:50,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:50,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:50,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:49:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:50,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:49:50,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:49:50,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:49:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:50,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:50,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:50,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:49:50,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:50,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-28 13:49:50,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:50,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:50,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 520 [2020-10-28 13:49:50,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:50,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:49:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:51,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:51,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:49:51,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 13:49:51,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:51,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 235 [2020-10-28 13:49:51,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:49:51,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:49:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:51,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:51,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:51,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:49:51,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:51,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:49:51,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:51,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:49:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:49:51,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 13:49:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:49:51,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:49:51,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:51,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:51,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:51,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-28 13:49:51,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:51,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-28 13:49:51,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:51,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:49:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:49:51,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-28 13:49:51,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:52,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-28 13:49:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:49:52,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:49:52,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:49:52,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 13:49:52,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:49:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 13:49:52,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:49:52,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:49:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:49:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:49:52,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:49:52,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:49:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 150 proven. 106 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2020-10-28 13:49:52,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [42149825] [2020-10-28 13:49:52,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:49:52,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:49:52,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984501899] [2020-10-28 13:49:52,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:49:52,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:49:52,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:49:52,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:49:52,731 INFO L87 Difference]: Start difference. First operand 14543 states and 15641 transitions. Second operand 7 states. [2020-10-28 13:50:02,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:50:02,794 INFO L93 Difference]: Finished difference Result 33634 states and 36196 transitions. [2020-10-28 13:50:02,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:50:02,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 773 [2020-10-28 13:50:02,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:50:02,849 INFO L225 Difference]: With dead ends: 33634 [2020-10-28 13:50:02,849 INFO L226 Difference]: Without dead ends: 19799 [2020-10-28 13:50:02,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:50:02,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19799 states. [2020-10-28 13:50:03,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19799 to 19611. [2020-10-28 13:50:03,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19611 states. [2020-10-28 13:50:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19611 states to 19611 states and 20828 transitions. [2020-10-28 13:50:03,285 INFO L78 Accepts]: Start accepts. Automaton has 19611 states and 20828 transitions. Word has length 773 [2020-10-28 13:50:03,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:50:03,287 INFO L481 AbstractCegarLoop]: Abstraction has 19611 states and 20828 transitions. [2020-10-28 13:50:03,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:50:03,288 INFO L276 IsEmpty]: Start isEmpty. Operand 19611 states and 20828 transitions. [2020-10-28 13:50:03,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 949 [2020-10-28 13:50:03,329 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:50:03,330 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:03,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:50:03,331 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:50:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:50:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1159335573, now seen corresponding path program 1 times [2020-10-28 13:50:03,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:50:03,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541562962] [2020-10-28 13:50:03,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:50:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:03,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:05,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:05,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 970 [2020-10-28 13:50:05,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:05,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1345 [2020-10-28 13:50:05,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:05,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:05,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 13:50:05,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 13:50:05,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:05,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:50:05,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:05,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:05,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:05,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:50:05,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:05,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:50:05,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:05,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:05,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:05,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:05,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:50:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:05,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:05,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:05,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:50:05,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:05,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 13:50:05,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:05,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:05,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:05,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:05,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:05,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:05,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:05,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:50:05,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:05,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:50:05,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:05,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:05,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:05,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:05,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:05,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:05,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:50:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:05,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:05,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:05,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:50:05,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:05,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:50:05,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:05,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:05,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:05,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:06,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:50:06,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:06,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:06,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:06,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:50:06,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:06,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 13:50:06,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:06,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:50:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:06,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:06,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:06,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:06,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:50:06,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:06,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:50:06,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:06,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:06,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:06,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:06,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:50:06,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:06,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:50:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:06,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:06,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:50:06,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:06,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:50:06,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:06,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:06,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:06,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:50:06,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:50:06,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 223 proven. 2 refuted. 0 times theorem prover too weak. 303 trivial. 0 not checked. [2020-10-28 13:50:07,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541562962] [2020-10-28 13:50:07,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:50:07,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:50:07,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930598311] [2020-10-28 13:50:07,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:50:07,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:50:07,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:50:07,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:50:07,410 INFO L87 Difference]: Start difference. First operand 19611 states and 20828 transitions. Second operand 7 states. [2020-10-28 13:50:21,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:50:21,555 INFO L93 Difference]: Finished difference Result 46583 states and 50249 transitions. [2020-10-28 13:50:21,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:50:21,557 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 948 [2020-10-28 13:50:21,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:50:21,620 INFO L225 Difference]: With dead ends: 46583 [2020-10-28 13:50:21,620 INFO L226 Difference]: Without dead ends: 26971 [2020-10-28 13:50:21,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:50:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26971 states. [2020-10-28 13:50:22,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26971 to 26109. [2020-10-28 13:50:22,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26109 states. [2020-10-28 13:50:22,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26109 states to 26109 states and 27681 transitions. [2020-10-28 13:50:22,138 INFO L78 Accepts]: Start accepts. Automaton has 26109 states and 27681 transitions. Word has length 948 [2020-10-28 13:50:22,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:50:22,140 INFO L481 AbstractCegarLoop]: Abstraction has 26109 states and 27681 transitions. [2020-10-28 13:50:22,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:50:22,141 INFO L276 IsEmpty]: Start isEmpty. Operand 26109 states and 27681 transitions. [2020-10-28 13:50:22,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1025 [2020-10-28 13:50:22,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:50:22,156 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:22,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:50:22,156 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:50:22,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:50:22,157 INFO L82 PathProgramCache]: Analyzing trace with hash -121652346, now seen corresponding path program 1 times [2020-10-28 13:50:22,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:50:22,158 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464419730] [2020-10-28 13:50:22,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:50:22,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:23,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:27,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:27,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1048 [2020-10-28 13:50:27,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:50:27,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4954 [2020-10-28 13:50:27,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:27,360 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 930 [2020-10-28 13:50:27,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:50:27,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:27,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:50:27,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:27,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:27,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:27,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:50:27,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:27,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:50:27,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:27,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:27,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:27,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:27,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:50:27,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:27,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:27,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:27,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:50:27,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:27,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-28 13:50:27,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:27,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:27,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:27,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:28,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:28,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:28,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:28,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:28,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:50:28,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:28,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-28 13:50:28,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:28,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:28,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:28,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:50:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:28,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:28,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:28,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:50:28,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:28,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:50:28,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:28,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:28,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:28,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:28,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:28,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:28,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:50:28,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:28,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:28,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:50:28,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:28,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-28 13:50:28,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:28,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:28,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:28,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:28,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:28,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:28,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:28,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:50:28,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:28,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:50:28,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:28,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:28,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:28,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:28,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:50:28,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:28,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:28,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:28,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:50:28,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:28,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:50:28,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:28,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:28,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:50:28,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:28,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-28 13:50:28,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:28,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:28,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:28,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:50:28,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:28,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 13:50:28,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:28,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:28,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:50:28,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:50:28,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:29,580 INFO L134 CoverageAnalysis]: Checked inductivity of 765 backedges. 307 proven. 2 refuted. 0 times theorem prover too weak. 456 trivial. 0 not checked. [2020-10-28 13:50:29,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464419730] [2020-10-28 13:50:29,581 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:50:29,581 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:50:29,581 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447052341] [2020-10-28 13:50:29,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:50:29,583 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:50:29,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:50:29,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:50:29,584 INFO L87 Difference]: Start difference. First operand 26109 states and 27681 transitions. Second operand 7 states. [2020-10-28 13:50:42,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:50:42,220 INFO L93 Difference]: Finished difference Result 57350 states and 61718 transitions. [2020-10-28 13:50:42,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:50:42,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1024 [2020-10-28 13:50:42,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:50:42,311 INFO L225 Difference]: With dead ends: 57350 [2020-10-28 13:50:42,312 INFO L226 Difference]: Without dead ends: 31949 [2020-10-28 13:50:42,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:50:42,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31949 states. [2020-10-28 13:50:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31949 to 31837. [2020-10-28 13:50:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31837 states. [2020-10-28 13:50:43,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31837 states to 31837 states and 33802 transitions. [2020-10-28 13:50:43,070 INFO L78 Accepts]: Start accepts. Automaton has 31837 states and 33802 transitions. Word has length 1024 [2020-10-28 13:50:43,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:50:43,071 INFO L481 AbstractCegarLoop]: Abstraction has 31837 states and 33802 transitions. [2020-10-28 13:50:43,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:50:43,072 INFO L276 IsEmpty]: Start isEmpty. Operand 31837 states and 33802 transitions. [2020-10-28 13:50:43,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1046 [2020-10-28 13:50:43,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:50:43,087 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:50:43,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:50:43,088 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:50:43,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:50:43,089 INFO L82 PathProgramCache]: Analyzing trace with hash 1580982220, now seen corresponding path program 1 times [2020-10-28 13:50:43,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:50:43,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488351175] [2020-10-28 13:50:43,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:50:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:43,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:43,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:48,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:48,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1069 [2020-10-28 13:50:48,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:50:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-28 13:50:48,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:48,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 849 [2020-10-28 13:50:48,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:50:48,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:48,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:50:48,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:48,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:48,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:50:48,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:50:48,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:48,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:48,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:50:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:48,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:48,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:48,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:50:48,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:48,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:50:48,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:48,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:48,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:48,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:48,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:48,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:48,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:48,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:50:48,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:48,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:50:48,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:48,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:48,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:48,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:50:48,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:48,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:48,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:48,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:50:48,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:48,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:50:48,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:48,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:48,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:48,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:49,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:50:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:49,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:49,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:49,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:50:49,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:49,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 293 [2020-10-28 13:50:49,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:49,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:49,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-28 13:50:49,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:49,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:50:49,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:49,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:49,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:49,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:50:49,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:49,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-28 13:50:49,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:49,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:50:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:50:49,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 13:50:49,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:49,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:50:49,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:49,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:49,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:49,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:50:49,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-28 13:50:49,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:49,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:50:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:50:49,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:50:49,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:49,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 918 [2020-10-28 13:50:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:50:49,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:50:49,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:50:49,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:50:49,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:50:49,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 13:50:49,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:50:49,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:50:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:50:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 13:50:49,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:50:49,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:50:50,250 INFO L134 CoverageAnalysis]: Checked inductivity of 807 backedges. 198 proven. 75 refuted. 0 times theorem prover too weak. 534 trivial. 0 not checked. [2020-10-28 13:50:50,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488351175] [2020-10-28 13:50:50,251 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:50:50,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:50:50,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910683407] [2020-10-28 13:50:50,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:50:50,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:50:50,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:50:50,253 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:50:50,253 INFO L87 Difference]: Start difference. First operand 31837 states and 33802 transitions. Second operand 7 states. [2020-10-28 13:51:03,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:03,472 INFO L93 Difference]: Finished difference Result 80203 states and 86005 transitions. [2020-10-28 13:51:03,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:51:03,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1045 [2020-10-28 13:51:03,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:03,604 INFO L225 Difference]: With dead ends: 80203 [2020-10-28 13:51:03,604 INFO L226 Difference]: Without dead ends: 48362 [2020-10-28 13:51:03,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:51:03,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48362 states. [2020-10-28 13:51:04,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48362 to 47557. [2020-10-28 13:51:04,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47557 states. [2020-10-28 13:51:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47557 states to 47557 states and 50217 transitions. [2020-10-28 13:51:04,506 INFO L78 Accepts]: Start accepts. Automaton has 47557 states and 50217 transitions. Word has length 1045 [2020-10-28 13:51:04,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:04,507 INFO L481 AbstractCegarLoop]: Abstraction has 47557 states and 50217 transitions. [2020-10-28 13:51:04,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:51:04,507 INFO L276 IsEmpty]: Start isEmpty. Operand 47557 states and 50217 transitions. [2020-10-28 13:51:04,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2020-10-28 13:51:04,521 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:04,522 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:51:04,522 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:51:04,522 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:04,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:04,523 INFO L82 PathProgramCache]: Analyzing trace with hash 1423022735, now seen corresponding path program 1 times [2020-10-28 13:51:04,523 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:04,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2068127712] [2020-10-28 13:51:04,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:04,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:04,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:04,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:09,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:09,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1076 [2020-10-28 13:51:09,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:51:09,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5095 [2020-10-28 13:51:09,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:09,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:09,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:09,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 856 [2020-10-28 13:51:09,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:51:09,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:09,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:09,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:09,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:09,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:09,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:09,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:51:09,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:09,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:09,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:09,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:10,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:10,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:10,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:10,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:51:10,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:10,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 13:51:10,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:10,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:10,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:10,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:10,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:10,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:10,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:10,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:10,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:10,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:51:10,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:10,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:51:10,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:10,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:10,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:10,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:10,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:51:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:10,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:10,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:10,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:51:10,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:10,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:51:10,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:10,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:10,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:10,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:10,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:51:10,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:10,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:10,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:10,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:51:10,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:10,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 13:51:10,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:10,651 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:10,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:10,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:10,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 308 [2020-10-28 13:51:10,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:10,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:10,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:10,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:10,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 13:51:10,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:10,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 13:51:10,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:10,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:10,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 13:51:10,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:10,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 849 [2020-10-28 13:51:10,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:10,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:10,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:51:10,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-28 13:51:10,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:10,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:10,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:51:10,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:10,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 925 [2020-10-28 13:51:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:10,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:10,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:10,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 13:51:10,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:10,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:51:10,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:10,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:10,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:10,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 116 [2020-10-28 13:51:10,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:10,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:11,466 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 198 proven. 75 refuted. 0 times theorem prover too weak. 541 trivial. 0 not checked. [2020-10-28 13:51:11,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2068127712] [2020-10-28 13:51:11,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:51:11,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:51:11,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109777142] [2020-10-28 13:51:11,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:51:11,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:11,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:51:11,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:11,469 INFO L87 Difference]: Start difference. First operand 47557 states and 50217 transitions. Second operand 7 states. [2020-10-28 13:51:22,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:51:22,473 INFO L93 Difference]: Finished difference Result 105886 states and 112884 transitions. [2020-10-28 13:51:22,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:51:22,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1052 [2020-10-28 13:51:22,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:51:22,649 INFO L225 Difference]: With dead ends: 105886 [2020-10-28 13:51:22,650 INFO L226 Difference]: Without dead ends: 59037 [2020-10-28 13:51:22,720 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:51:22,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59037 states. [2020-10-28 13:51:23,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59037 to 58288. [2020-10-28 13:51:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58288 states. [2020-10-28 13:51:23,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58288 states to 58288 states and 61921 transitions. [2020-10-28 13:51:23,818 INFO L78 Accepts]: Start accepts. Automaton has 58288 states and 61921 transitions. Word has length 1052 [2020-10-28 13:51:23,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:51:23,820 INFO L481 AbstractCegarLoop]: Abstraction has 58288 states and 61921 transitions. [2020-10-28 13:51:23,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:51:23,820 INFO L276 IsEmpty]: Start isEmpty. Operand 58288 states and 61921 transitions. [2020-10-28 13:51:23,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2020-10-28 13:51:23,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:51:23,839 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:51:23,839 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:51:23,839 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:51:23,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:51:23,840 INFO L82 PathProgramCache]: Analyzing trace with hash 2001093490, now seen corresponding path program 1 times [2020-10-28 13:51:23,840 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:51:23,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1668950839] [2020-10-28 13:51:23,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:51:24,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:24,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:26,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:26,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1115 [2020-10-28 13:51:26,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:26,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2128 [2020-10-28 13:51:26,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:26,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 997 [2020-10-28 13:51:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:51:26,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:26,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:51:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:26,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:26,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:26,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:51:26,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:26,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:51:26,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:26,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:26,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:26,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:26,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:26,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:26,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:51:26,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:26,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:26,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:26,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-28 13:51:26,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:51:26,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:26,639 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:26,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:26,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:26,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:26,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:26,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:26,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-28 13:51:26,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:26,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:51:26,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:26,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:26,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:26,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:26,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:26,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 13:51:26,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:26,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:26,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:26,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-28 13:51:26,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:26,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:51:26,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:26,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:26,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:26,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:27,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 535 [2020-10-28 13:51:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:27,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:27,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:27,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-28 13:51:27,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:27,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 13:51:27,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:27,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:27,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:27,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:51:27,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:27,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:27,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 13:51:27,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:51:27,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:27,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:51:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:27,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:51:27,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:27,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 842 [2020-10-28 13:51:27,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:27,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:27,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 13:51:27,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:27,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-28 13:51:27,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:27,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:27,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:51:27,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:51:27,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-28 13:51:27,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:27,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 985 [2020-10-28 13:51:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:51:27,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:51:27,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:51:27,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-28 13:51:27,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:51:27,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:51:27,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:51:27,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:51:27,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:51:27,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:51:27,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 13:51:27,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:51:28,204 INFO L134 CoverageAnalysis]: Checked inductivity of 920 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-28 13:51:28,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1668950839] [2020-10-28 13:51:28,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:51:28,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:51:28,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084828435] [2020-10-28 13:51:28,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:51:28,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:51:28,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:51:28,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:51:28,207 INFO L87 Difference]: Start difference. First operand 58288 states and 61921 transitions. Second operand 7 states.