/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:06:28,018 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:06:28,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:06:28,101 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:06:28,102 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:06:28,113 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:06:28,116 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:06:28,123 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:06:28,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:06:28,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:06:28,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:06:28,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:06:28,143 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:06:28,148 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:06:28,152 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:06:28,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:06:28,157 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:06:28,162 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:06:28,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:06:28,183 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:06:28,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:06:28,192 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:06:28,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:06:28,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:06:28,200 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:06:28,201 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:06:28,201 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:06:28,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:06:28,204 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:06:28,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:06:28,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:06:28,208 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:06:28,209 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:06:28,210 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:06:28,212 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:06:28,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:06:28,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:06:28,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:06:28,215 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:06:28,230 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:06:28,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:06:28,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:06:28,265 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:06:28,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:06:28,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:06:28,269 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:06:28,269 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:06:28,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:06:28,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:06:28,270 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:06:28,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:06:28,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:06:28,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:06:28,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:06:28,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:06:28,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:06:28,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:06:28,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:06:28,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:06:28,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:06:28,272 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:06:28,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:06:28,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:06:28,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:06:28,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:06:28,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:06:28,273 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:06:28,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:06:28,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:06:28,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:06:28,274 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:06:28,274 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:06:28,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:06:28,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:06:28,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:06:28,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:06:28,812 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:06:28,813 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label28.c [2020-10-28 13:06:28,936 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c64e4e10f/9d5001eee0fd471490b71463da5f8a0f/FLAG50f3046b1 [2020-10-28 13:06:30,064 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:06:30,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label28.c [2020-10-28 13:06:30,100 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c64e4e10f/9d5001eee0fd471490b71463da5f8a0f/FLAG50f3046b1 [2020-10-28 13:06:30,531 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c64e4e10f/9d5001eee0fd471490b71463da5f8a0f [2020-10-28 13:06:30,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:06:30,546 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:06:30,552 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:06:30,552 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:06:30,557 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:06:30,559 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:06:30" (1/1) ... [2020-10-28 13:06:30,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d1f1c68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:30, skipping insertion in model container [2020-10-28 13:06:30,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:06:30" (1/1) ... [2020-10-28 13:06:30,577 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:06:30,697 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:06:31,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:06:31,735 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:06:32,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:06:32,116 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:06:32,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:32 WrapperNode [2020-10-28 13:06:32,117 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:06:32,119 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:06:32,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:06:32,120 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:06:32,138 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:32" (1/1) ... [2020-10-28 13:06:32,141 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:32" (1/1) ... [2020-10-28 13:06:32,215 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:32" (1/1) ... [2020-10-28 13:06:32,216 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:32" (1/1) ... [2020-10-28 13:06:32,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:32" (1/1) ... [2020-10-28 13:06:32,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:32" (1/1) ... [2020-10-28 13:06:32,336 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:32" (1/1) ... [2020-10-28 13:06:32,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:06:32,357 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:06:32,357 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:06:32,357 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:06:32,358 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:32" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:06:32,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:06:32,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:06:32,473 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:06:32,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:06:32,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:06:32,475 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:06:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:06:32,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:06:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:06:32,476 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:06:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:06:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:06:32,477 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:06:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:06:32,478 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:06:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:06:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:06:32,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:06:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:06:32,480 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:06:32,481 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:06:36,352 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:06:36,353 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:06:36,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:06:36 BoogieIcfgContainer [2020-10-28 13:06:36,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:06:36,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:06:36,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:06:36,363 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:06:36,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:06:30" (1/3) ... [2020-10-28 13:06:36,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42afd154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:06:36, skipping insertion in model container [2020-10-28 13:06:36,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:06:32" (2/3) ... [2020-10-28 13:06:36,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42afd154 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:06:36, skipping insertion in model container [2020-10-28 13:06:36,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:06:36" (3/3) ... [2020-10-28 13:06:36,367 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label28.c [2020-10-28 13:06:36,380 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:06:36,386 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:06:36,401 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:06:36,434 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:06:36,435 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:06:36,435 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:06:36,435 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:06:36,435 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:06:36,435 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:06:36,436 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:06:36,436 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:06:36,465 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:06:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-28 13:06:36,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:36,475 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] [2020-10-28 13:06:36,475 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:36,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:36,481 INFO L82 PathProgramCache]: Analyzing trace with hash 287999495, now seen corresponding path program 1 times [2020-10-28 13:06:36,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:36,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1286454111] [2020-10-28 13:06:36,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:36,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:37,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:37,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 13:06:37,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-28 13:06:37,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:37,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:06:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:06:37,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-28 13:06:37,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:06:37,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:37,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:37,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:37,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:37,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:37,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:37,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 13:06:37,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:37,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:37,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:37,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:06:37,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:06:37,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:06:37,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1286454111] [2020-10-28 13:06:37,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:06:37,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:06:37,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773689807] [2020-10-28 13:06:37,649 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:06:37,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:37,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:06:37,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:06:37,675 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:06:46,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:06:46,295 INFO L93 Difference]: Finished difference Result 1208 states and 2172 transitions. [2020-10-28 13:06:46,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:06:46,298 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-10-28 13:06:46,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:06:46,320 INFO L225 Difference]: With dead ends: 1208 [2020-10-28 13:06:46,320 INFO L226 Difference]: Without dead ends: 703 [2020-10-28 13:06:46,334 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 [2020-10-28 13:06:46,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-28 13:06:46,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 697. [2020-10-28 13:06:46,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-10-28 13:06:46,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1016 transitions. [2020-10-28 13:06:46,492 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1016 transitions. Word has length 39 [2020-10-28 13:06:46,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:06:46,492 INFO L481 AbstractCegarLoop]: Abstraction has 697 states and 1016 transitions. [2020-10-28 13:06:46,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:06:46,493 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1016 transitions. [2020-10-28 13:06:46,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-10-28 13:06:46,499 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:06:46,499 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:06:46,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:06:46,500 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:06:46,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:06:46,501 INFO L82 PathProgramCache]: Analyzing trace with hash -1496870164, now seen corresponding path program 1 times [2020-10-28 13:06:46,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:06:46,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980306869] [2020-10-28 13:06:46,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:06:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:46,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:47,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:47,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:48,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:48,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 13:06:48,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:06:48,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1659 [2020-10-28 13:06:48,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:48,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:06:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:06:48,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-28 13:06:48,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:06:48,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:06:48,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:48,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:48,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:06:48,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:48,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:06:48,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:48,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:06:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:06:48,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:06:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:06:48,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:06:48,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:06:48,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:06:48,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:06:48,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:06:48,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:06:48,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 13:06:48,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:06:48,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:06:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:06:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:06:48,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:06:48,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:06:48,729 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:06:48,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980306869] [2020-10-28 13:06:48,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:06:48,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:06:48,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680454330] [2020-10-28 13:06:48,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:06:48,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:06:48,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:06:48,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:06:48,742 INFO L87 Difference]: Start difference. First operand 697 states and 1016 transitions. Second operand 7 states. [2020-10-28 13:07:00,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:00,189 INFO L93 Difference]: Finished difference Result 2066 states and 3031 transitions. [2020-10-28 13:07:00,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:07:00,190 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 118 [2020-10-28 13:07:00,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:00,202 INFO L225 Difference]: With dead ends: 2066 [2020-10-28 13:07:00,203 INFO L226 Difference]: Without dead ends: 1375 [2020-10-28 13:07:00,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:07:00,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2020-10-28 13:07:00,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 1338. [2020-10-28 13:07:00,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-10-28 13:07:00,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1730 transitions. [2020-10-28 13:07:00,275 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1730 transitions. Word has length 118 [2020-10-28 13:07:00,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:00,276 INFO L481 AbstractCegarLoop]: Abstraction has 1338 states and 1730 transitions. [2020-10-28 13:07:00,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1730 transitions. [2020-10-28 13:07:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-28 13:07:00,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:00,283 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:00,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:07:00,284 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:00,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:00,284 INFO L82 PathProgramCache]: Analyzing trace with hash 167353298, now seen corresponding path program 1 times [2020-10-28 13:07:00,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:00,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249500119] [2020-10-28 13:07:00,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:00,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:00,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:02,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:02,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-28 13:07:02,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:07:02,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2481 [2020-10-28 13:07:02,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:02,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:07:02,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:07:02,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:02,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:02,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:02,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:03,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:03,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:03,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:03,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:07:03,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:03,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:03,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:03,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:07:03,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:07:03,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:03,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:03,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:03,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:07:03,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:03,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-28 13:07:03,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:03,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:03,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:07:03,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:03,931 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:07:03,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249500119] [2020-10-28 13:07:03,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:07:03,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:07:03,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709426644] [2020-10-28 13:07:03,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:03,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:03,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:03,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:03,934 INFO L87 Difference]: Start difference. First operand 1338 states and 1730 transitions. Second operand 7 states. [2020-10-28 13:07:12,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:12,110 INFO L93 Difference]: Finished difference Result 3015 states and 3823 transitions. [2020-10-28 13:07:12,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:07:12,111 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 239 [2020-10-28 13:07:12,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:12,138 INFO L225 Difference]: With dead ends: 3015 [2020-10-28 13:07:12,139 INFO L226 Difference]: Without dead ends: 1683 [2020-10-28 13:07:12,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:07:12,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2020-10-28 13:07:12,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1651. [2020-10-28 13:07:12,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1651 states. [2020-10-28 13:07:12,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1651 states to 1651 states and 2053 transitions. [2020-10-28 13:07:12,233 INFO L78 Accepts]: Start accepts. Automaton has 1651 states and 2053 transitions. Word has length 239 [2020-10-28 13:07:12,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:12,236 INFO L481 AbstractCegarLoop]: Abstraction has 1651 states and 2053 transitions. [2020-10-28 13:07:12,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:12,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1651 states and 2053 transitions. [2020-10-28 13:07:12,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-28 13:07:12,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:12,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:12,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:07:12,257 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:12,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:12,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1659411941, now seen corresponding path program 1 times [2020-10-28 13:07:12,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:12,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015101321] [2020-10-28 13:07:12,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:12,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:12,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:14,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:14,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 13:07:14,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:07:14,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2019 [2020-10-28 13:07:14,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:14,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:14,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:07:14,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 13:07:14,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:14,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:14,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:14,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:14,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:14,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:14,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:14,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:07:14,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:14,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:14,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:14,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:14,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:15,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:15,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:07:15,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:15,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-28 13:07:15,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:15,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:15,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:07:15,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:15,296 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:07:15,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015101321] [2020-10-28 13:07:15,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:15,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:07:15,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313675238] [2020-10-28 13:07:15,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:07:15,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:15,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:07:15,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:07:15,300 INFO L87 Difference]: Start difference. First operand 1651 states and 2053 transitions. Second operand 5 states. [2020-10-28 13:07:22,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:22,218 INFO L93 Difference]: Finished difference Result 3921 states and 5053 transitions. [2020-10-28 13:07:22,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:07:22,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 313 [2020-10-28 13:07:22,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:22,235 INFO L225 Difference]: With dead ends: 3921 [2020-10-28 13:07:22,236 INFO L226 Difference]: Without dead ends: 2583 [2020-10-28 13:07:22,239 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:07:22,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2583 states. [2020-10-28 13:07:22,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2583 to 2276. [2020-10-28 13:07:22,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-10-28 13:07:22,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2804 transitions. [2020-10-28 13:07:22,327 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2804 transitions. Word has length 313 [2020-10-28 13:07:22,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:22,328 INFO L481 AbstractCegarLoop]: Abstraction has 2276 states and 2804 transitions. [2020-10-28 13:07:22,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:07:22,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2804 transitions. [2020-10-28 13:07:22,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 394 [2020-10-28 13:07:22,336 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:22,336 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:22,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:07:22,337 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:22,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:22,338 INFO L82 PathProgramCache]: Analyzing trace with hash -539958217, now seen corresponding path program 1 times [2020-10-28 13:07:22,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:22,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [186543832] [2020-10-28 13:07:22,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:22,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:22,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:25,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:25,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-28 13:07:25,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:07:25,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3131 [2020-10-28 13:07:25,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:25,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:25,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:07:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 13:07:25,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:25,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:25,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:25,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:25,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:25,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:25,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:25,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:07:25,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:25,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:25,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:25,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:25,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:25,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:25,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:26,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:26,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:07:26,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:26,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 296 [2020-10-28 13:07:26,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:26,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:26,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:26,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:26,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:07:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:07:26,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:07:26,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:26,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:26,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:07:26,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:26,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 13:07:26,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:26,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:26,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:26,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:26,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:07:26,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:26,749 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 139 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:07:26,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [186543832] [2020-10-28 13:07:26,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:26,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:07:26,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075456752] [2020-10-28 13:07:26,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:26,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:26,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:26,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:26,752 INFO L87 Difference]: Start difference. First operand 2276 states and 2804 transitions. Second operand 7 states. [2020-10-28 13:07:37,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:37,390 INFO L93 Difference]: Finished difference Result 5561 states and 7110 transitions. [2020-10-28 13:07:37,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:07:37,391 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 393 [2020-10-28 13:07:37,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:37,408 INFO L225 Difference]: With dead ends: 5561 [2020-10-28 13:07:37,409 INFO L226 Difference]: Without dead ends: 3598 [2020-10-28 13:07:37,413 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:07:37,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3598 states. [2020-10-28 13:07:37,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3598 to 3263. [2020-10-28 13:07:37,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3263 states. [2020-10-28 13:07:37,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3263 states to 3263 states and 3918 transitions. [2020-10-28 13:07:37,515 INFO L78 Accepts]: Start accepts. Automaton has 3263 states and 3918 transitions. Word has length 393 [2020-10-28 13:07:37,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:37,516 INFO L481 AbstractCegarLoop]: Abstraction has 3263 states and 3918 transitions. [2020-10-28 13:07:37,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:37,516 INFO L276 IsEmpty]: Start isEmpty. Operand 3263 states and 3918 transitions. [2020-10-28 13:07:37,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 415 [2020-10-28 13:07:37,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:37,527 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:07:37,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:07:37,527 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:37,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:37,528 INFO L82 PathProgramCache]: Analyzing trace with hash 149509914, now seen corresponding path program 1 times [2020-10-28 13:07:37,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:37,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599489566] [2020-10-28 13:07:37,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:37,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:38,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:41,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:42,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:42,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 430 [2020-10-28 13:07:42,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:07:42,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 13:07:42,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:42,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:07:42,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 285 [2020-10-28 13:07:42,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:42,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:42,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:42,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:42,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:42,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:42,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:07:42,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:42,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:42,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:42,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:42,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:42,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:42,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:42,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:42,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:42,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:42,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:07:42,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:42,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-28 13:07:42,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:42,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:07:42,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:42,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:07:43,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:43,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:43,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:43,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:07:43,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:07:43,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 881 [2020-10-28 13:07:43,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:43,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:43,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:43,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:43,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:07:43,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:44,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-28 13:07:44,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:44,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:44,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:44,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:07:44,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:44,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 13:07:44,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:44,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:44,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:44,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:07:44,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 348 backedges. 262 proven. 6 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-28 13:07:44,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599489566] [2020-10-28 13:07:44,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:07:44,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:07:44,456 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636016693] [2020-10-28 13:07:44,456 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:44,457 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:44,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:44,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:44,458 INFO L87 Difference]: Start difference. First operand 3263 states and 3918 transitions. Second operand 7 states. [2020-10-28 13:07:55,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:55,624 INFO L93 Difference]: Finished difference Result 8790 states and 10802 transitions. [2020-10-28 13:07:55,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:07:55,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 414 [2020-10-28 13:07:55,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:55,650 INFO L225 Difference]: With dead ends: 8790 [2020-10-28 13:07:55,650 INFO L226 Difference]: Without dead ends: 4869 [2020-10-28 13:07:55,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:07:55,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2020-10-28 13:07:55,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4230. [2020-10-28 13:07:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4230 states. [2020-10-28 13:07:55,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4230 states to 4230 states and 4841 transitions. [2020-10-28 13:07:55,777 INFO L78 Accepts]: Start accepts. Automaton has 4230 states and 4841 transitions. Word has length 414 [2020-10-28 13:07:55,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:55,777 INFO L481 AbstractCegarLoop]: Abstraction has 4230 states and 4841 transitions. [2020-10-28 13:07:55,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:55,778 INFO L276 IsEmpty]: Start isEmpty. Operand 4230 states and 4841 transitions. [2020-10-28 13:07:55,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 425 [2020-10-28 13:07:55,784 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:55,788 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:07:55,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:07:55,789 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:55,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:55,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1551861798, now seen corresponding path program 1 times [2020-10-28 13:07:55,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:55,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486492362] [2020-10-28 13:07:55,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:55,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:55,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:56,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:58,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:58,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 438 [2020-10-28 13:07:58,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:07:58,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2853 [2020-10-28 13:07:58,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:58,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:07:58,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:07:58,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:58,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:58,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:58,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:58,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:58,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:58,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:07:58,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:58,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:07:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:58,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:07:58,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:58,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:59,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:59,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:59,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:07:59,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:59,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-28 13:07:59,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:59,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:59,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:59,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:07:59,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:59,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:07:59,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:59,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:59,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:07:59,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:59,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-28 13:07:59,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:59,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:59,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:07:59,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:08:00,112 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486492362] [2020-10-28 13:08:00,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:00,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:00,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305843107] [2020-10-28 13:08:00,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:00,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:00,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:00,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:00,115 INFO L87 Difference]: Start difference. First operand 4230 states and 4841 transitions. Second operand 7 states. [2020-10-28 13:08:10,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:10,624 INFO L93 Difference]: Finished difference Result 8864 states and 10168 transitions. [2020-10-28 13:08:10,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:08:10,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 424 [2020-10-28 13:08:10,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:10,657 INFO L225 Difference]: With dead ends: 8864 [2020-10-28 13:08:10,657 INFO L226 Difference]: Without dead ends: 4947 [2020-10-28 13:08:10,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:08:10,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4947 states. [2020-10-28 13:08:10,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4947 to 4879. [2020-10-28 13:08:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4879 states. [2020-10-28 13:08:10,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4879 states to 4879 states and 5526 transitions. [2020-10-28 13:08:10,790 INFO L78 Accepts]: Start accepts. Automaton has 4879 states and 5526 transitions. Word has length 424 [2020-10-28 13:08:10,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:10,791 INFO L481 AbstractCegarLoop]: Abstraction has 4879 states and 5526 transitions. [2020-10-28 13:08:10,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:10,792 INFO L276 IsEmpty]: Start isEmpty. Operand 4879 states and 5526 transitions. [2020-10-28 13:08:10,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 437 [2020-10-28 13:08:10,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:10,802 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:08:10,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:08:10,802 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:10,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:10,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1219023570, now seen corresponding path program 1 times [2020-10-28 13:08:10,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:10,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116250997] [2020-10-28 13:08:10,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:10,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:11,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:11,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 450 [2020-10-28 13:08:11,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 707 [2020-10-28 13:08:11,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:11,628 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:11,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:08:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 13:08:11,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:11,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:11,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:11,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:11,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:11,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:11,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:11,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:08:11,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:11,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:11,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:11,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:11,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:11,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:11,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:11,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:08:11,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:11,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 13:08:11,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:11,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:11,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:11,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:12,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:08:12,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:12,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:12,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:12,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:12,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:12,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-28 13:08:12,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:12,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:12,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:12,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:12,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:08:12,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:12,480 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:08:12,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116250997] [2020-10-28 13:08:12,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:12,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:08:12,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972092528] [2020-10-28 13:08:12,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:08:12,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:12,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:08:12,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:08:12,483 INFO L87 Difference]: Start difference. First operand 4879 states and 5526 transitions. Second operand 5 states. [2020-10-28 13:08:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:19,687 INFO L93 Difference]: Finished difference Result 11424 states and 13212 transitions. [2020-10-28 13:08:19,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:08:19,696 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 436 [2020-10-28 13:08:19,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:19,727 INFO L225 Difference]: With dead ends: 11424 [2020-10-28 13:08:19,728 INFO L226 Difference]: Without dead ends: 6858 [2020-10-28 13:08:19,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:08:19,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6858 states. [2020-10-28 13:08:19,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6858 to 6839. [2020-10-28 13:08:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6839 states. [2020-10-28 13:08:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6839 states to 6839 states and 7866 transitions. [2020-10-28 13:08:19,920 INFO L78 Accepts]: Start accepts. Automaton has 6839 states and 7866 transitions. Word has length 436 [2020-10-28 13:08:19,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:19,921 INFO L481 AbstractCegarLoop]: Abstraction has 6839 states and 7866 transitions. [2020-10-28 13:08:19,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:08:19,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6839 states and 7866 transitions. [2020-10-28 13:08:19,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2020-10-28 13:08:19,927 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:19,928 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:19,928 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:08:19,929 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:19,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:19,929 INFO L82 PathProgramCache]: Analyzing trace with hash -1455968894, now seen corresponding path program 1 times [2020-10-28 13:08:19,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:19,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035104630] [2020-10-28 13:08:19,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:20,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:20,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:21,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:23,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:23,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 528 [2020-10-28 13:08:23,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:08:23,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3539 [2020-10-28 13:08:23,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:23,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:23,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:08:23,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:08:23,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:23,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:23,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:23,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:23,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:23,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:23,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:23,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:08:23,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:23,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:23,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:23,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:23,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:23,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:23,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:23,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:23,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:23,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:08:23,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-28 13:08:23,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:23,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:23,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:24,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:08:24,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:24,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:24,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:24,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:24,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:24,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:08:24,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:24,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:24,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:08:24,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:24,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:08:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:24,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:24,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:24,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:08:24,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:24,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-28 13:08:24,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:24,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:24,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:08:24,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:24,609 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 244 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:08:24,609 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035104630] [2020-10-28 13:08:24,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:24,609 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:24,609 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228432137] [2020-10-28 13:08:24,610 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:24,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:24,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:24,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:24,617 INFO L87 Difference]: Start difference. First operand 6839 states and 7866 transitions. Second operand 7 states. [2020-10-28 13:08:35,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:35,711 INFO L93 Difference]: Finished difference Result 16520 states and 19549 transitions. [2020-10-28 13:08:35,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:08:35,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 512 [2020-10-28 13:08:35,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:35,753 INFO L225 Difference]: With dead ends: 16520 [2020-10-28 13:08:35,754 INFO L226 Difference]: Without dead ends: 9994 [2020-10-28 13:08:35,771 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:08:35,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9994 states. [2020-10-28 13:08:35,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9994 to 8712. [2020-10-28 13:08:35,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8712 states. [2020-10-28 13:08:35,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 10268 transitions. [2020-10-28 13:08:35,986 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 10268 transitions. Word has length 512 [2020-10-28 13:08:35,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:35,987 INFO L481 AbstractCegarLoop]: Abstraction has 8712 states and 10268 transitions. [2020-10-28 13:08:35,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 10268 transitions. [2020-10-28 13:08:35,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 530 [2020-10-28 13:08:35,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:35,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:35,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:08:35,995 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:35,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:35,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1552789880, now seen corresponding path program 1 times [2020-10-28 13:08:35,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:35,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408072799] [2020-10-28 13:08:35,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:36,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:36,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:38,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:38,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 545 [2020-10-28 13:08:38,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:08:38,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2544 [2020-10-28 13:08:38,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:38,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:08:38,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:08:38,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:38,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:38,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:38,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:38,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:38,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:38,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:38,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:08:38,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:38,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:38,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:38,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:38,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:39,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:39,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:08:39,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:39,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:08:39,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:39,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:39,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:08:39,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:39,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:39,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:39,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:39,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:39,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:08:39,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:39,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:39,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:08:39,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:39,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:08:39,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:39,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:39,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:39,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 13:08:39,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:39,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-28 13:08:39,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:39,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:39,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 13:08:39,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:39,878 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 278 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:08:39,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408072799] [2020-10-28 13:08:39,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:39,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:39,879 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22592231] [2020-10-28 13:08:39,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:39,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:39,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:39,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:39,881 INFO L87 Difference]: Start difference. First operand 8712 states and 10268 transitions. Second operand 7 states. [2020-10-28 13:08:47,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:47,801 INFO L93 Difference]: Finished difference Result 19988 states and 24445 transitions. [2020-10-28 13:08:47,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:08:47,803 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 529 [2020-10-28 13:08:47,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:47,844 INFO L225 Difference]: With dead ends: 19988 [2020-10-28 13:08:47,844 INFO L226 Difference]: Without dead ends: 11589 [2020-10-28 13:08:47,868 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:08:47,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11589 states. [2020-10-28 13:08:48,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11589 to 11561. [2020-10-28 13:08:48,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11561 states. [2020-10-28 13:08:48,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11561 states to 11561 states and 13548 transitions. [2020-10-28 13:08:48,153 INFO L78 Accepts]: Start accepts. Automaton has 11561 states and 13548 transitions. Word has length 529 [2020-10-28 13:08:48,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:48,155 INFO L481 AbstractCegarLoop]: Abstraction has 11561 states and 13548 transitions. [2020-10-28 13:08:48,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:48,155 INFO L276 IsEmpty]: Start isEmpty. Operand 11561 states and 13548 transitions. [2020-10-28 13:08:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-28 13:08:48,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:48,163 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:48,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:08:48,164 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:48,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:48,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1664872415, now seen corresponding path program 1 times [2020-10-28 13:08:48,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:48,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269835414] [2020-10-28 13:08:48,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:48,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:48,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:48,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:49,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:51,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:51,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 553 [2020-10-28 13:08:51,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:08:51,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3093 [2020-10-28 13:08:51,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:51,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:51,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:51,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:08:51,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:08:51,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:51,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:51,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:51,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:51,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:51,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:51,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:51,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:08:51,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:51,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:51,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:51,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:51,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:51,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:51,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:51,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:51,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:51,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:08:51,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:51,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-28 13:08:51,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:51,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:51,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:51,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:51,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:51,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:08:51,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:51,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:51,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:51,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:08:51,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:51,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-28 13:08:51,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:51,866 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:51,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:08:51,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:51,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:08:51,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:51,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:52,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:52,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 13:08:52,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:52,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:08:52,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:52,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:52,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:52,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-28 13:08:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:52,305 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 294 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:08:52,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269835414] [2020-10-28 13:08:52,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:52,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:52,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481279872] [2020-10-28 13:08:52,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:52,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:52,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:52,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:52,307 INFO L87 Difference]: Start difference. First operand 11561 states and 13548 transitions. Second operand 7 states. [2020-10-28 13:09:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:04,287 INFO L93 Difference]: Finished difference Result 30310 states and 36243 transitions. [2020-10-28 13:09:04,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:09:04,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 537 [2020-10-28 13:09:04,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:04,369 INFO L225 Difference]: With dead ends: 30310 [2020-10-28 13:09:04,369 INFO L226 Difference]: Without dead ends: 18432 [2020-10-28 13:09:04,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:09:04,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18432 states. [2020-10-28 13:09:04,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18432 to 16874. [2020-10-28 13:09:04,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16874 states. [2020-10-28 13:09:04,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16874 states to 16874 states and 19565 transitions. [2020-10-28 13:09:04,841 INFO L78 Accepts]: Start accepts. Automaton has 16874 states and 19565 transitions. Word has length 537 [2020-10-28 13:09:04,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:04,842 INFO L481 AbstractCegarLoop]: Abstraction has 16874 states and 19565 transitions. [2020-10-28 13:09:04,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:04,842 INFO L276 IsEmpty]: Start isEmpty. Operand 16874 states and 19565 transitions. [2020-10-28 13:09:04,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 586 [2020-10-28 13:09:04,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:04,851 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:04,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:09:04,851 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:04,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:04,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1615289779, now seen corresponding path program 1 times [2020-10-28 13:09:04,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:04,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [577696497] [2020-10-28 13:09:04,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:05,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:05,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:05,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:08,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:10,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:10,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 601 [2020-10-28 13:09:10,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:09:10,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-28 13:09:10,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:10,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:10,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 560 [2020-10-28 13:09:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-28 13:09:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:10,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:10,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:10,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:10,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:10,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:09:10,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:10,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:10,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:10,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:10,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:10,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:10,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:10,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:10,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:09:10,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:10,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-28 13:09:10,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:10,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:10,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:10,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:10,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:10,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:10,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:09:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:10,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:10,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:10,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:09:10,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:10,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 13:09:10,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:10,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:10,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:10,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:10,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:10,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:10,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:09:10,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:10,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:10,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 13:09:10,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:10,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 13:09:10,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:10,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:10,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:10,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 13:09:10,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:11,016 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 96 proven. 3 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2020-10-28 13:09:11,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [577696497] [2020-10-28 13:09:11,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:11,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:09:11,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442581502] [2020-10-28 13:09:11,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:09:11,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:11,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:09:11,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:09:11,032 INFO L87 Difference]: Start difference. First operand 16874 states and 19565 transitions. Second operand 5 states. [2020-10-28 13:09:21,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:21,172 INFO L93 Difference]: Finished difference Result 42735 states and 50493 transitions. [2020-10-28 13:09:21,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:09:21,175 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 585 [2020-10-28 13:09:21,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:21,267 INFO L225 Difference]: With dead ends: 42735 [2020-10-28 13:09:21,267 INFO L226 Difference]: Without dead ends: 25861 [2020-10-28 13:09:21,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:09:21,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25861 states. [2020-10-28 13:09:21,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25861 to 24596. [2020-10-28 13:09:21,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24596 states. [2020-10-28 13:09:21,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24596 states to 24596 states and 28904 transitions. [2020-10-28 13:09:21,858 INFO L78 Accepts]: Start accepts. Automaton has 24596 states and 28904 transitions. Word has length 585 [2020-10-28 13:09:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:21,862 INFO L481 AbstractCegarLoop]: Abstraction has 24596 states and 28904 transitions. [2020-10-28 13:09:21,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:09:21,862 INFO L276 IsEmpty]: Start isEmpty. Operand 24596 states and 28904 transitions. [2020-10-28 13:09:21,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 615 [2020-10-28 13:09:21,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:21,872 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:21,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:09:21,873 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:21,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:21,873 INFO L82 PathProgramCache]: Analyzing trace with hash 834016433, now seen corresponding path program 1 times [2020-10-28 13:09:21,873 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:21,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1562252497] [2020-10-28 13:09:21,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:22,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:22,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:23,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:24,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:24,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 630 [2020-10-28 13:09:24,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:09:24,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2627 [2020-10-28 13:09:24,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:24,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 491 [2020-10-28 13:09:24,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:09:24,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:24,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:24,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:24,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:24,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:24,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:24,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:24,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:09:24,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:24,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:24,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:24,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:24,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:24,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:24,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:24,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:24,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:09:24,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:24,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:09:24,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:24,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:24,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:24,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:24,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:25,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:09:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:25,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:25,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:25,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:09:25,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:25,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-28 13:09:25,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:25,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:25,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:25,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:25,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-28 13:09:25,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:25,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:09:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:25,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:25,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:25,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 13:09:25,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 13:09:25,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:25,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:25,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 13:09:25,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:25,833 INFO L134 CoverageAnalysis]: Checked inductivity of 478 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 192 trivial. 0 not checked. [2020-10-28 13:09:25,833 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1562252497] [2020-10-28 13:09:25,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:25,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:09:25,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23377436] [2020-10-28 13:09:25,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:09:25,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:25,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:09:25,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:09:25,837 INFO L87 Difference]: Start difference. First operand 24596 states and 28904 transitions. Second operand 7 states. [2020-10-28 13:09:34,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:34,936 INFO L93 Difference]: Finished difference Result 53840 states and 64216 transitions. [2020-10-28 13:09:34,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:09:34,937 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 614 [2020-10-28 13:09:34,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:35,044 INFO L225 Difference]: With dead ends: 53840 [2020-10-28 13:09:35,044 INFO L226 Difference]: Without dead ends: 29248 [2020-10-28 13:09:35,083 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 [2020-10-28 13:09:35,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29248 states. [2020-10-28 13:09:35,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29248 to 28319. [2020-10-28 13:09:35,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28319 states. [2020-10-28 13:09:35,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28319 states to 28319 states and 32728 transitions. [2020-10-28 13:09:35,676 INFO L78 Accepts]: Start accepts. Automaton has 28319 states and 32728 transitions. Word has length 614 [2020-10-28 13:09:35,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:35,677 INFO L481 AbstractCegarLoop]: Abstraction has 28319 states and 32728 transitions. [2020-10-28 13:09:35,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:35,677 INFO L276 IsEmpty]: Start isEmpty. Operand 28319 states and 32728 transitions. [2020-10-28 13:09:35,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2020-10-28 13:09:35,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:35,693 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:35,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:09:35,693 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:35,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:35,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1298240507, now seen corresponding path program 1 times [2020-10-28 13:09:35,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:35,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496242644] [2020-10-28 13:09:35,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:36,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:36,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:38,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:40,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:40,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 716 [2020-10-28 13:09:40,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:09:40,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4228 [2020-10-28 13:09:40,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:40,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:40,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:40,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 576 [2020-10-28 13:09:40,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 13:09:40,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:40,394 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:09:40,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:40,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:40,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:40,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:40,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:40,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:40,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:09:40,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:40,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:40,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:40,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:40,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:40,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:40,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:40,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:40,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:40,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:09:40,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:40,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-28 13:09:40,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:40,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:40,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:40,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:40,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:40,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:09:40,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:40,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:40,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 280 [2020-10-28 13:09:40,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:40,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 13:09:40,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:40,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:40,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 273 [2020-10-28 13:09:40,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:41,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-28 13:09:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:41,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:41,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:41,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 13:09:41,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:41,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 13:09:41,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:41,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:41,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-28 13:09:41,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:41,520 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 284 proven. 2 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-28 13:09:41,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496242644] [2020-10-28 13:09:41,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:41,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:09:41,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945349723] [2020-10-28 13:09:41,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:09:41,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:41,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:09:41,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:09:41,523 INFO L87 Difference]: Start difference. First operand 28319 states and 32728 transitions. Second operand 7 states. [2020-10-28 13:09:41,677 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-28 13:09:51,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:51,026 INFO L93 Difference]: Finished difference Result 63466 states and 73080 transitions. [2020-10-28 13:09:51,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:09:51,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 700 [2020-10-28 13:09:51,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:51,123 INFO L225 Difference]: With dead ends: 63466 [2020-10-28 13:09:51,123 INFO L226 Difference]: Without dead ends: 35460 [2020-10-28 13:09:51,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:09:51,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35460 states. [2020-10-28 13:09:51,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35460 to 32660. [2020-10-28 13:09:51,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32660 states. [2020-10-28 13:09:51,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32660 states to 32660 states and 37404 transitions. [2020-10-28 13:09:51,868 INFO L78 Accepts]: Start accepts. Automaton has 32660 states and 37404 transitions. Word has length 700 [2020-10-28 13:09:51,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:51,869 INFO L481 AbstractCegarLoop]: Abstraction has 32660 states and 37404 transitions. [2020-10-28 13:09:51,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:51,869 INFO L276 IsEmpty]: Start isEmpty. Operand 32660 states and 37404 transitions. [2020-10-28 13:09:51,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 719 [2020-10-28 13:09:51,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:51,888 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:09:51,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:09:51,888 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:51,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:51,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1438560765, now seen corresponding path program 1 times [2020-10-28 13:09:51,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:51,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476156517] [2020-10-28 13:09:51,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:52,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:52,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:52,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:53,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:55,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 736 [2020-10-28 13:09:57,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 13:09:57,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 13:09:57,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:09:57,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 573 [2020-10-28 13:09:57,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 13:09:57,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:57,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:57,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:57,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:09:57,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:57,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:57,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:57,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:57,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:09:57,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:57,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:09:57,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:57,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:57,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:57,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:09:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:57,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-28 13:09:57,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 13:09:57,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:57,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:57,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2020-10-28 13:09:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:57,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-28 13:09:57,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-28 13:09:57,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:57,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:09:57,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:57,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 567 [2020-10-28 13:09:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:57,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:57,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:57,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 13:09:57,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:57,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-28 13:09:57,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:57,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:57,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:57,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:57,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-28 13:09:57,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:58,218 INFO L134 CoverageAnalysis]: Checked inductivity of 793 backedges. 406 proven. 33 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-10-28 13:09:58,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476156517] [2020-10-28 13:09:58,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:58,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:09:58,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410812529] [2020-10-28 13:09:58,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:09:58,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:58,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:09:58,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:09:58,221 INFO L87 Difference]: Start difference. First operand 32660 states and 37404 transitions. Second operand 6 states. [2020-10-28 13:10:08,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:08,438 INFO L93 Difference]: Finished difference Result 77743 states and 92996 transitions. [2020-10-28 13:10:08,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:10:08,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 718 [2020-10-28 13:10:08,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:08,620 INFO L225 Difference]: With dead ends: 77743 [2020-10-28 13:10:08,620 INFO L226 Difference]: Without dead ends: 45396 [2020-10-28 13:10:08,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:10:08,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45396 states. [2020-10-28 13:10:09,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45396 to 44855. [2020-10-28 13:10:09,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44855 states. [2020-10-28 13:10:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44855 states to 44855 states and 51355 transitions. [2020-10-28 13:10:09,854 INFO L78 Accepts]: Start accepts. Automaton has 44855 states and 51355 transitions. Word has length 718 [2020-10-28 13:10:09,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:09,855 INFO L481 AbstractCegarLoop]: Abstraction has 44855 states and 51355 transitions. [2020-10-28 13:10:09,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:10:09,855 INFO L276 IsEmpty]: Start isEmpty. Operand 44855 states and 51355 transitions. [2020-10-28 13:10:09,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 732 [2020-10-28 13:10:09,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:09,873 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:10:09,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 13:10:09,873 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:09,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:09,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1129429223, now seen corresponding path program 1 times [2020-10-28 13:10:09,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:09,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [118161291] [2020-10-28 13:10:09,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:10,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:10,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:10,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:13,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking...