/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=SHALLOWEST --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/Problem15_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:42:17,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:42:17,958 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:42:17,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:42:17,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:42:17,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:42:18,001 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:42:18,003 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:42:18,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:42:18,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:42:18,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:42:18,010 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:42:18,011 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:42:18,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:42:18,013 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:42:18,015 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:42:18,016 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:42:18,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:42:18,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:42:18,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:42:18,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:42:18,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:42:18,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:42:18,044 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:42:18,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:42:18,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:42:18,048 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:42:18,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:42:18,050 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:42:18,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:42:18,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:42:18,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:42:18,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:42:18,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:42:18,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:42:18,057 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:42:18,058 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:42:18,058 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:42:18,059 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:42:18,060 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:42:18,061 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:42:18,062 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 [2020-10-26 23:42:18,110 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:42:18,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:42:18,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:42:18,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:42:18,117 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:42:18,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:42:18,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:42:18,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:42:18,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:42:18,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:42:18,119 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:42:18,119 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:42:18,119 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:42:18,120 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:42:18,120 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:42:18,120 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:42:18,120 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:42:18,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:42:18,121 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:42:18,121 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:42:18,121 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:42:18,121 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:42:18,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:42:18,122 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:42:18,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:42:18,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:42:18,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:42:18,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:42:18,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:42:18,125 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:42:18,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:42:18,666 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:42:18,669 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:42:18,671 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:42:18,671 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:42:18,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2020-10-26 23:42:18,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b538fce84/ec10bd8e4a9343eda71a471070690161/FLAG79ccabfdc [2020-10-26 23:42:19,818 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:42:19,819 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2020-10-26 23:42:19,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b538fce84/ec10bd8e4a9343eda71a471070690161/FLAG79ccabfdc [2020-10-26 23:42:19,893 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b538fce84/ec10bd8e4a9343eda71a471070690161 [2020-10-26 23:42:19,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:42:19,908 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:42:19,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:42:19,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:42:19,917 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:42:19,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:42:19" (1/1) ... [2020-10-26 23:42:19,925 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59405cb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:19, skipping insertion in model container [2020-10-26 23:42:19,925 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:42:19" (1/1) ... [2020-10-26 23:42:19,935 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:42:20,037 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:42:20,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:42:20,859 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:42:21,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:42:21,185 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:42:21,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:21 WrapperNode [2020-10-26 23:42:21,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:42:21,188 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:42:21,188 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:42:21,188 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:42:21,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:21" (1/1) ... [2020-10-26 23:42:21,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:21" (1/1) ... [2020-10-26 23:42:21,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:21" (1/1) ... [2020-10-26 23:42:21,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:21" (1/1) ... [2020-10-26 23:42:21,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:21" (1/1) ... [2020-10-26 23:42:21,387 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:21" (1/1) ... [2020-10-26 23:42:21,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:21" (1/1) ... [2020-10-26 23:42:21,435 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:42:21,437 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:42:21,437 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:42:21,437 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:42:21,439 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:21" (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 [2020-10-26 23:42:21,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:42:21,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:42:21,538 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:42:21,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:42:21,538 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:42:21,538 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:42:21,538 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:42:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:42:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:42:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:42:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:42:21,539 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:42:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:42:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:42:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:42:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:42:21,540 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:42:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:42:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:42:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:42:21,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:42:25,076 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:42:25,076 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:42:25,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:42:25 BoogieIcfgContainer [2020-10-26 23:42:25,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:42:25,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:42:25,082 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:42:25,086 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:42:25,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:42:19" (1/3) ... [2020-10-26 23:42:25,087 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617cbec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:42:25, skipping insertion in model container [2020-10-26 23:42:25,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:42:21" (2/3) ... [2020-10-26 23:42:25,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@617cbec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:42:25, skipping insertion in model container [2020-10-26 23:42:25,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:42:25" (3/3) ... [2020-10-26 23:42:25,090 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label31.c [2020-10-26 23:42:25,103 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:42:25,109 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:42:25,125 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:42:25,157 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:42:25,158 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:42:25,158 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:42:25,158 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:42:25,158 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:42:25,158 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:42:25,181 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:42:25,181 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:42:25,215 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:42:25,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-26 23:42:25,227 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:25,228 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:25,229 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:25,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:25,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1588391441, now seen corresponding path program 1 times [2020-10-26 23:42:25,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:25,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39592355] [2020-10-26 23:42:25,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:26,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:26,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:42:26,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-26 23:42:26,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:26,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 23:42:26,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:42:26,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:26,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:26,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:26,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:26,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:42:26,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:26,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:26,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:26,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:26,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:26,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:42:26,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39592355] [2020-10-26 23:42:26,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:42:26,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:42:26,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989035021] [2020-10-26 23:42:26,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:42:26,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:26,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:42:26,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:42:26,617 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:42:33,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:33,142 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-26 23:42:33,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:42:33,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-26 23:42:33,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:33,166 INFO L225 Difference]: With dead ends: 1204 [2020-10-26 23:42:33,167 INFO L226 Difference]: Without dead ends: 698 [2020-10-26 23:42:33,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:42:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-26 23:42:33,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-26 23:42:33,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-26 23:42:33,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-26 23:42:33,287 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 72 [2020-10-26 23:42:33,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:33,288 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-26 23:42:33,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:42:33,289 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-26 23:42:33,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-26 23:42:33,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:33,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:42:33,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:42:33,297 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:33,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:33,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1110631610, now seen corresponding path program 1 times [2020-10-26 23:42:33,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:33,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1672514798] [2020-10-26 23:42:33,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:33,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:33,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:34,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:37,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:37,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-26 23:42:37,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:42:37,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4299 [2020-10-26 23:42:37,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:37,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:37,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:42:37,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:42:37,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:37,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:37,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:37,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:37,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:37,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:37,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:42:37,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:37,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:37,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:37,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:37,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:37,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:42:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:37,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:38,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:38,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:42:38,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:38,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 168 [2020-10-26 23:42:38,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:38,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:42:38,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:38,232 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:42:38,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1672514798] [2020-10-26 23:42:38,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:42:38,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:42:38,234 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818028975] [2020-10-26 23:42:38,236 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:42:38,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:38,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:42:38,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:42:38,245 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-26 23:42:49,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:42:49,251 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-26 23:42:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:42:49,257 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 141 [2020-10-26 23:42:49,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:42:49,266 INFO L225 Difference]: With dead ends: 1712 [2020-10-26 23:42:49,267 INFO L226 Difference]: Without dead ends: 1026 [2020-10-26 23:42:49,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:42:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-26 23:42:49,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-26 23:42:49,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-26 23:42:49,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-26 23:42:49,351 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 141 [2020-10-26 23:42:49,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:42:49,351 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-26 23:42:49,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:42:49,352 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-26 23:42:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-26 23:42:49,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:42:49,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:42:49,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:42:49,357 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:42:49,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:42:49,357 INFO L82 PathProgramCache]: Analyzing trace with hash 805212482, now seen corresponding path program 1 times [2020-10-26 23:42:49,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:42:49,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [567953814] [2020-10-26 23:42:49,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:42:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:49,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:49,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:50,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:51,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:51,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-26 23:42:51,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:42:51,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1632 [2020-10-26 23:42:51,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:42:51,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:42:51,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:42:51,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:42:51,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:42:51,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:51,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:51,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:51,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:42:51,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:51,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:42:51,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:51,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:42:51,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:42:51,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:42:51,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:51,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:42:51,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:42:51,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:42:51,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:42:51,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:42:51,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:42:51,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:42:51,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:42:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:42:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:42:51,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:42:51,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:42:51,525 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:42:51,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [567953814] [2020-10-26 23:42:51,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:42:51,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:42:51,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954704696] [2020-10-26 23:42:51,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:42:51,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:42:51,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:42:51,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:42:51,533 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-26 23:43:03,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:03,763 INFO L93 Difference]: Finished difference Result 2388 states and 3398 transitions. [2020-10-26 23:43:03,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:43:03,764 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-26 23:43:03,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:03,778 INFO L225 Difference]: With dead ends: 2388 [2020-10-26 23:43:03,778 INFO L226 Difference]: Without dead ends: 1686 [2020-10-26 23:43:03,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:43:03,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-10-26 23:43:03,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1336. [2020-10-26 23:43:03,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-26 23:43:03,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1730 transitions. [2020-10-26 23:43:03,840 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1730 transitions. Word has length 146 [2020-10-26 23:43:03,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:03,841 INFO L481 AbstractCegarLoop]: Abstraction has 1336 states and 1730 transitions. [2020-10-26 23:43:03,841 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:43:03,841 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1730 transitions. [2020-10-26 23:43:03,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-26 23:43:03,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:03,849 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:43:03,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:43:03,849 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:03,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:03,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1458117912, now seen corresponding path program 1 times [2020-10-26 23:43:03,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:03,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482839666] [2020-10-26 23:43:03,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:03,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:03,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:04,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:04,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:05,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:07,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:08,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:08,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 260 [2020-10-26 23:43:08,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:43:08,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:43:08,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:43:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:08,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:43:08,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:09,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:09,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:09,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:09,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:09,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:09,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:09,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:43:09,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:09,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:09,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:09,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:09,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:09,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:09,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:43:09,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:09,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 23:43:09,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:09,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:43:09,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:09,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:43:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:09,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:09,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:09,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:43:09,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:09,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 23:43:09,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:09,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:09,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:43:09,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:43:09,804 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-26 23:43:09,804 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482839666] [2020-10-26 23:43:09,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:09,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:43:09,805 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237379869] [2020-10-26 23:43:09,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:43:09,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:09,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:43:09,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:43:09,808 INFO L87 Difference]: Start difference. First operand 1336 states and 1730 transitions. Second operand 7 states. [2020-10-26 23:43:19,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:19,426 INFO L93 Difference]: Finished difference Result 3974 states and 5156 transitions. [2020-10-26 23:43:19,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:43:19,435 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-26 23:43:19,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:19,453 INFO L225 Difference]: With dead ends: 3974 [2020-10-26 23:43:19,453 INFO L226 Difference]: Without dead ends: 2644 [2020-10-26 23:43:19,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:43:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2644 states. [2020-10-26 23:43:19,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2644 to 2585. [2020-10-26 23:43:19,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2585 states. [2020-10-26 23:43:19,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2585 states to 2585 states and 3125 transitions. [2020-10-26 23:43:19,540 INFO L78 Accepts]: Start accepts. Automaton has 2585 states and 3125 transitions. Word has length 246 [2020-10-26 23:43:19,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:19,541 INFO L481 AbstractCegarLoop]: Abstraction has 2585 states and 3125 transitions. [2020-10-26 23:43:19,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:43:19,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2585 states and 3125 transitions. [2020-10-26 23:43:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-26 23:43:19,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:19,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:43:19,549 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:43:19,550 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:19,550 INFO L82 PathProgramCache]: Analyzing trace with hash 43445068, now seen corresponding path program 1 times [2020-10-26 23:43:19,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:19,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84261785] [2020-10-26 23:43:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:19,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:19,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:19,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:21,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:24,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:24,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 366 [2020-10-26 23:43:24,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:43:24,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5087 [2020-10-26 23:43:24,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:24,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:43:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:24,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:43:24,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:24,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:24,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:24,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:24,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:24,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:24,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:43:24,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:24,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:24,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:24,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:24,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:25,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:25,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:25,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:25,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:43:25,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:25,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-26 23:43:25,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:25,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:25,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:43:25,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:43:25,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:43:25,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:25,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:25,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:25,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:43:25,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:25,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-26 23:43:25,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:25,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:43:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:43:25,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:43:25,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:43:26,405 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:43:26,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84261785] [2020-10-26 23:43:26,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:26,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:43:26,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760031414] [2020-10-26 23:43:26,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:43:26,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:26,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:43:26,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:43:26,409 INFO L87 Difference]: Start difference. First operand 2585 states and 3125 transitions. Second operand 7 states. [2020-10-26 23:43:38,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:43:38,205 INFO L93 Difference]: Finished difference Result 4912 states and 5991 transitions. [2020-10-26 23:43:38,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:43:38,213 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 352 [2020-10-26 23:43:38,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:43:38,258 INFO L225 Difference]: With dead ends: 4912 [2020-10-26 23:43:38,258 INFO L226 Difference]: Without dead ends: 2640 [2020-10-26 23:43:38,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:43:38,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2640 states. [2020-10-26 23:43:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2640 to 2589. [2020-10-26 23:43:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2589 states. [2020-10-26 23:43:38,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2589 states to 2589 states and 3125 transitions. [2020-10-26 23:43:38,360 INFO L78 Accepts]: Start accepts. Automaton has 2589 states and 3125 transitions. Word has length 352 [2020-10-26 23:43:38,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:43:38,361 INFO L481 AbstractCegarLoop]: Abstraction has 2589 states and 3125 transitions. [2020-10-26 23:43:38,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:43:38,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2589 states and 3125 transitions. [2020-10-26 23:43:38,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-26 23:43:38,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:43:38,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:43:38,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:43:38,371 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:43:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:43:38,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1619349466, now seen corresponding path program 1 times [2020-10-26 23:43:38,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:43:38,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622404193] [2020-10-26 23:43:38,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:43:38,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:38,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:38,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:38,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:39,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:42,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:43,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:43,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 381 [2020-10-26 23:43:43,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:43:43,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:43:43,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:43:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:43:43,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 372 [2020-10-26 23:43:43,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:43:43,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:43:43,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:43,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:43,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:43,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:43:43,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:43:43,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:43:43,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:43:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:43:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:43:43,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:43,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:43:43,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:43,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:43,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:44,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:44,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:43:44,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:44,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-26 23:43:44,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:44,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:43:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:44,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:43:44,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:44,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:43:44,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:43:44,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:44,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:43:45,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:43:45,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:43:45,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:43:45,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-10-26 23:43:45,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:43:45,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:43:45,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:43:45,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:43:45,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:43:45,656 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-10-26 23:43:45,809 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 38 [2020-10-26 23:43:45,972 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-10-26 23:43:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 5 proven. 214 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:43:46,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622404193] [2020-10-26 23:43:46,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:43:46,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:43:46,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616600042] [2020-10-26 23:43:46,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:43:46,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:43:46,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:43:46,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:43:46,861 INFO L87 Difference]: Start difference. First operand 2589 states and 3125 transitions. Second operand 12 states. [2020-10-26 23:43:47,202 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 75 [2020-10-26 23:43:48,747 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 86 [2020-10-26 23:43:49,519 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 72 [2020-10-26 23:43:49,824 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-10-26 23:43:51,052 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 35 [2020-10-26 23:43:52,332 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-26 23:43:53,182 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-26 23:43:53,531 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-26 23:43:54,655 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-10-26 23:43:55,166 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-26 23:43:56,170 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2020-10-26 23:44:07,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:07,830 INFO L93 Difference]: Finished difference Result 3246 states and 4229 transitions. [2020-10-26 23:44:07,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-26 23:44:07,833 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 367 [2020-10-26 23:44:07,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:07,853 INFO L225 Difference]: With dead ends: 3246 [2020-10-26 23:44:07,854 INFO L226 Difference]: Without dead ends: 3243 [2020-10-26 23:44:07,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=315, Invalid=875, Unknown=0, NotChecked=0, Total=1190 [2020-10-26 23:44:07,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3243 states. [2020-10-26 23:44:07,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3243 to 2914. [2020-10-26 23:44:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2914 states. [2020-10-26 23:44:07,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2914 states to 2914 states and 3702 transitions. [2020-10-26 23:44:07,970 INFO L78 Accepts]: Start accepts. Automaton has 2914 states and 3702 transitions. Word has length 367 [2020-10-26 23:44:07,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:07,971 INFO L481 AbstractCegarLoop]: Abstraction has 2914 states and 3702 transitions. [2020-10-26 23:44:07,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:44:07,972 INFO L276 IsEmpty]: Start isEmpty. Operand 2914 states and 3702 transitions. [2020-10-26 23:44:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2020-10-26 23:44:07,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:07,988 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:07,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:44:07,988 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:07,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:07,989 INFO L82 PathProgramCache]: Analyzing trace with hash -196248656, now seen corresponding path program 1 times [2020-10-26 23:44:07,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:07,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [192800710] [2020-10-26 23:44:07,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:08,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:08,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:09,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:13,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:13,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-26 23:44:13,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:44:13,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:44:13,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:13,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:13,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:44:13,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:44:13,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:13,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:13,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:13,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:13,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:13,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:13,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:44:13,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:13,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:13,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:13,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:13,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:13,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:13,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:44:13,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:13,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-10-26 23:44:13,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:13,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:44:13,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:13,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:44:13,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:13,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:13,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:13,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:44:13,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:13,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 23:44:13,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:13,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:44:13,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:14,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-26 23:44:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:14,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:14,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:14,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:44:14,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:14,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:44:14,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:44:14,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:14,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:14,416 INFO L134 CoverageAnalysis]: Checked inductivity of 424 backedges. 273 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-26 23:44:14,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [192800710] [2020-10-26 23:44:14,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:14,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:14,419 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726535453] [2020-10-26 23:44:14,419 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:14,420 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:14,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:14,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:14,421 INFO L87 Difference]: Start difference. First operand 2914 states and 3702 transitions. Second operand 7 states. [2020-10-26 23:44:28,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:28,124 INFO L93 Difference]: Finished difference Result 7168 states and 9549 transitions. [2020-10-26 23:44:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:44:28,126 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 502 [2020-10-26 23:44:28,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:28,148 INFO L225 Difference]: With dead ends: 7168 [2020-10-26 23:44:28,149 INFO L226 Difference]: Without dead ends: 4567 [2020-10-26 23:44:28,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:28,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4567 states. [2020-10-26 23:44:28,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4567 to 4508. [2020-10-26 23:44:28,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4508 states. [2020-10-26 23:44:28,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4508 states to 4508 states and 5645 transitions. [2020-10-26 23:44:28,294 INFO L78 Accepts]: Start accepts. Automaton has 4508 states and 5645 transitions. Word has length 502 [2020-10-26 23:44:28,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:28,295 INFO L481 AbstractCegarLoop]: Abstraction has 4508 states and 5645 transitions. [2020-10-26 23:44:28,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:28,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4508 states and 5645 transitions. [2020-10-26 23:44:28,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-10-26 23:44:28,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:28,304 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:44:28,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:44:28,304 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:28,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:28,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1893937580, now seen corresponding path program 1 times [2020-10-26 23:44:28,307 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:28,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [333053776] [2020-10-26 23:44:28,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:28,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:28,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:28,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:29,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:30,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:31,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:33,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:33,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 541 [2020-10-26 23:44:33,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 23:44:33,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 23:44:33,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:44:33,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:44:33,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-26 23:44:33,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:33,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:33,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:33,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:33,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:33,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:33,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:44:33,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:33,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:33,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:33,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:33,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:33,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-26 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:33,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:44:33,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:33,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:44:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:33,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:34,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:34,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:34,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:44:34,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:44:34,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 668 [2020-10-26 23:44:34,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:34,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:44:34,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:34,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:44:34,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:34,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:34,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:34,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:44:34,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:34,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 23:44:34,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:34,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:34,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:34,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:44:34,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:34,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 383 [2020-10-26 23:44:34,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:34,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:34,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:34,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:44:34,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:44:34,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:44:34,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 739 backedges. 433 proven. 150 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-26 23:44:35,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [333053776] [2020-10-26 23:44:35,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:35,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:35,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313256103] [2020-10-26 23:44:35,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:35,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:35,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:35,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:35,077 INFO L87 Difference]: Start difference. First operand 4508 states and 5645 transitions. Second operand 7 states. [2020-10-26 23:44:51,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:44:51,747 INFO L93 Difference]: Finished difference Result 9413 states and 12216 transitions. [2020-10-26 23:44:51,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:44:51,749 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 523 [2020-10-26 23:44:51,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:44:51,775 INFO L225 Difference]: With dead ends: 9413 [2020-10-26 23:44:51,775 INFO L226 Difference]: Without dead ends: 5522 [2020-10-26 23:44:51,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:44:51,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5522 states. [2020-10-26 23:44:51,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5522 to 5496. [2020-10-26 23:44:51,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5496 states. [2020-10-26 23:44:51,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5496 states to 5496 states and 6774 transitions. [2020-10-26 23:44:51,927 INFO L78 Accepts]: Start accepts. Automaton has 5496 states and 6774 transitions. Word has length 523 [2020-10-26 23:44:51,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:44:51,928 INFO L481 AbstractCegarLoop]: Abstraction has 5496 states and 6774 transitions. [2020-10-26 23:44:51,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:44:51,928 INFO L276 IsEmpty]: Start isEmpty. Operand 5496 states and 6774 transitions. [2020-10-26 23:44:51,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2020-10-26 23:44:51,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:44:51,937 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:44:51,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:44:51,937 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:44:51,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:44:51,938 INFO L82 PathProgramCache]: Analyzing trace with hash -431031331, now seen corresponding path program 1 times [2020-10-26 23:44:51,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:44:51,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1128010113] [2020-10-26 23:44:51,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:44:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:52,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:52,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:54,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:57,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:57,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 549 [2020-10-26 23:44:57,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:44:57,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5061 [2020-10-26 23:44:57,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:44:57,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:44:57,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:57,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:44:57,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:57,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:57,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:44:57,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:44:57,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:57,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:57,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:57,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:44:57,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:57,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:57,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:44:57,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:57,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-26 23:44:57,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:44:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:44:57,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:44:57,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:57,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:44:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:57,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:57,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:57,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:44:57,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:57,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:44:57,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:44:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:44:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:44:57,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:57,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:44:57,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:44:57,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:44:57,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:44:57,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:44:57,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:44:57,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:44:57,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:44:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:44:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:44:57,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:44:57,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:44:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 304 proven. 75 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-26 23:44:58,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1128010113] [2020-10-26 23:44:58,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:44:58,383 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:44:58,383 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004516119] [2020-10-26 23:44:58,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:44:58,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:44:58,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:44:58,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:44:58,385 INFO L87 Difference]: Start difference. First operand 5496 states and 6774 transitions. Second operand 7 states. [2020-10-26 23:45:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:13,120 INFO L93 Difference]: Finished difference Result 12303 states and 15298 transitions. [2020-10-26 23:45:13,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:45:13,130 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 533 [2020-10-26 23:45:13,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:13,167 INFO L225 Difference]: With dead ends: 12303 [2020-10-26 23:45:13,168 INFO L226 Difference]: Without dead ends: 7120 [2020-10-26 23:45:13,178 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:45:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7120 states. [2020-10-26 23:45:13,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7120 to 6451. [2020-10-26 23:45:13,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6451 states. [2020-10-26 23:45:13,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6451 states to 6451 states and 7677 transitions. [2020-10-26 23:45:13,346 INFO L78 Accepts]: Start accepts. Automaton has 6451 states and 7677 transitions. Word has length 533 [2020-10-26 23:45:13,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:13,347 INFO L481 AbstractCegarLoop]: Abstraction has 6451 states and 7677 transitions. [2020-10-26 23:45:13,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:13,347 INFO L276 IsEmpty]: Start isEmpty. Operand 6451 states and 7677 transitions. [2020-10-26 23:45:13,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 546 [2020-10-26 23:45:13,356 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:13,357 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:13,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:45:13,358 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:13,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:13,358 INFO L82 PathProgramCache]: Analyzing trace with hash 959651157, now seen corresponding path program 1 times [2020-10-26 23:45:13,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:13,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321517366] [2020-10-26 23:45:13,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:13,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:13,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:16,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:16,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 561 [2020-10-26 23:45:16,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:16,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3042 [2020-10-26 23:45:16,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:16,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:16,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:45:16,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:45:16,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:16,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:16,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:16,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:16,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:16,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:45:16,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:16,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:16,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:16,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:16,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:16,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:16,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-26 23:45:16,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:16,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:16,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:16,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:16,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:16,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:16,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:16,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:16,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:45:16,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:16,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:45:16,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:17,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:17,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:17,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:17,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:45:17,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:45:17,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:17,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:45:17,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:17,351 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 343 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:45:17,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321517366] [2020-10-26 23:45:17,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:17,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:17,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770943445] [2020-10-26 23:45:17,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:17,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:17,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:17,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:17,354 INFO L87 Difference]: Start difference. First operand 6451 states and 7677 transitions. Second operand 7 states. [2020-10-26 23:45:30,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:30,299 INFO L93 Difference]: Finished difference Result 12309 states and 15689 transitions. [2020-10-26 23:45:30,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:45:30,303 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 545 [2020-10-26 23:45:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:30,329 INFO L225 Difference]: With dead ends: 12309 [2020-10-26 23:45:30,329 INFO L226 Difference]: Without dead ends: 8352 [2020-10-26 23:45:30,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:45:30,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8352 states. [2020-10-26 23:45:30,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8352 to 7699. [2020-10-26 23:45:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7699 states. [2020-10-26 23:45:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7699 states to 7699 states and 9581 transitions. [2020-10-26 23:45:30,516 INFO L78 Accepts]: Start accepts. Automaton has 7699 states and 9581 transitions. Word has length 545 [2020-10-26 23:45:30,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:30,517 INFO L481 AbstractCegarLoop]: Abstraction has 7699 states and 9581 transitions. [2020-10-26 23:45:30,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 7699 states and 9581 transitions. [2020-10-26 23:45:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 569 [2020-10-26 23:45:30,528 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:30,529 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:45:30,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:45:30,530 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:30,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:30,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1556911867, now seen corresponding path program 1 times [2020-10-26 23:45:30,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:30,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747328993] [2020-10-26 23:45:30,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:30,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:30,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:32,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 584 [2020-10-26 23:45:32,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:32,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1624 [2020-10-26 23:45:32,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:45:32,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:45:32,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:32,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:32,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:32,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:32,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:32,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:45:32,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:32,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:32,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:32,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:32,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:32,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:32,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:32,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:32,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 23:45:32,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:32,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:32,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:32,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:32,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:32,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:32,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:32,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:32,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:45:32,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:32,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:45:32,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:32,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:32,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:32,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:33,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:33,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:33,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-26 23:45:33,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-26 23:45:33,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-26 23:45:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:33,442 INFO L134 CoverageAnalysis]: Checked inductivity of 497 backedges. 385 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:45:33,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747328993] [2020-10-26 23:45:33,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:33,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:45:33,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105421264] [2020-10-26 23:45:33,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:45:33,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:33,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:45:33,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:45:33,444 INFO L87 Difference]: Start difference. First operand 7699 states and 9581 transitions. Second operand 7 states. [2020-10-26 23:45:47,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:45:47,640 INFO L93 Difference]: Finished difference Result 17375 states and 22491 transitions. [2020-10-26 23:45:47,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:45:47,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 568 [2020-10-26 23:45:47,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:45:47,679 INFO L225 Difference]: With dead ends: 17375 [2020-10-26 23:45:47,679 INFO L226 Difference]: Without dead ends: 9989 [2020-10-26 23:45:47,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:45:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9989 states. [2020-10-26 23:45:47,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9989 to 9619. [2020-10-26 23:45:47,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9619 states. [2020-10-26 23:45:47,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9619 states to 9619 states and 11861 transitions. [2020-10-26 23:45:47,932 INFO L78 Accepts]: Start accepts. Automaton has 9619 states and 11861 transitions. Word has length 568 [2020-10-26 23:45:47,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:45:47,933 INFO L481 AbstractCegarLoop]: Abstraction has 9619 states and 11861 transitions. [2020-10-26 23:45:47,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:45:47,933 INFO L276 IsEmpty]: Start isEmpty. Operand 9619 states and 11861 transitions. [2020-10-26 23:45:47,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 635 [2020-10-26 23:45:47,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:45:47,950 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:45:47,950 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:45:47,951 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:45:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:45:47,951 INFO L82 PathProgramCache]: Analyzing trace with hash 984071173, now seen corresponding path program 1 times [2020-10-26 23:45:47,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:45:47,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1200064809] [2020-10-26 23:45:47,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:45:48,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:48,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:48,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:50,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:53,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:53,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 650 [2020-10-26 23:45:53,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:45:53,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 23:45:53,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:45:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-26 23:45:53,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 23:45:53,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:53,351 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:45:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:53,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:53,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:53,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:45:53,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:45:53,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:45:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:53,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:45:53,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:53,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:45:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:53,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:53,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:53,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:45:53,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:53,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 23:45:53,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:45:53,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:45:53,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 23:45:53,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:53,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:45:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:53,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:53,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:53,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:45:53,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-26 23:45:53,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:45:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:53,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:45:53,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:53,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:45:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:45:54,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:45:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:45:54,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-26 23:45:54,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:45:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-26 23:45:54,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:45:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:45:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:45:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-26 23:45:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:45:54,882 INFO L134 CoverageAnalysis]: Checked inductivity of 579 backedges. 566 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:45:54,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1200064809] [2020-10-26 23:45:54,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:45:54,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:45:54,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397573013] [2020-10-26 23:45:54,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:45:54,884 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:45:54,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:45:54,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:45:54,886 INFO L87 Difference]: Start difference. First operand 9619 states and 11861 transitions. Second operand 10 states. [2020-10-26 23:45:57,669 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63