/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 18:26:55,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 18:26:55,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 18:26:56,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 18:26:56,021 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 18:26:56,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 18:26:56,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 18:26:56,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 18:26:56,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 18:26:56,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 18:26:56,049 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 18:26:56,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 18:26:56,051 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 18:26:56,054 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 18:26:56,057 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 18:26:56,059 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 18:26:56,060 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 18:26:56,064 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 18:26:56,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 18:26:56,080 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 18:26:56,082 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 18:26:56,084 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 18:26:56,086 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 18:26:56,089 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 18:26:56,106 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 18:26:56,107 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 18:26:56,107 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 18:26:56,110 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 18:26:56,110 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 18:26:56,112 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 18:26:56,112 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 18:26:56,113 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 18:26:56,115 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 18:26:56,116 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 18:26:56,118 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 18:26:56,118 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 18:26:56,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 18:26:56,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 18:26:56,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 18:26:56,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 18:26:56,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 18:26:56,130 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 [2020-10-27 18:26:56,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 18:26:56,184 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 18:26:56,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 18:26:56,190 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 18:26:56,190 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 18:26:56,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 18:26:56,191 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 18:26:56,191 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 18:26:56,191 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 18:26:56,191 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 18:26:56,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 18:26:56,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 18:26:56,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 18:26:56,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 18:26:56,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 18:26:56,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 18:26:56,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 18:26:56,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 18:26:56,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 18:26:56,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 18:26:56,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 18:26:56,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 18:26:56,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 18:26:56,195 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 18:26:56,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 18:26:56,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 18:26:56,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 18:26:56,196 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 18:26:56,196 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 18:26:56,196 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 18:26:56,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 18:26:56,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 18:26:56,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 18:26:56,672 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 18:26:56,673 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 18:26:56,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2020-10-27 18:26:56,774 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e450a517/c6ec4292983547d1aa62bf8b51cb5586/FLAGf242b7a09 [2020-10-27 18:26:57,692 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 18:26:57,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label31.c [2020-10-27 18:26:57,726 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e450a517/c6ec4292983547d1aa62bf8b51cb5586/FLAGf242b7a09 [2020-10-27 18:26:57,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5e450a517/c6ec4292983547d1aa62bf8b51cb5586 [2020-10-27 18:26:57,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 18:26:57,810 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 18:26:57,816 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 18:26:57,816 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 18:26:57,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 18:26:57,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:26:57" (1/1) ... [2020-10-27 18:26:57,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77708402 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:57, skipping insertion in model container [2020-10-27 18:26:57,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:26:57" (1/1) ... [2020-10-27 18:26:57,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 18:26:57,965 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 18:26:58,993 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:26:59,011 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 18:26:59,346 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 18:26:59,373 INFO L208 MainTranslator]: Completed translation [2020-10-27 18:26:59,375 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:59 WrapperNode [2020-10-27 18:26:59,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 18:26:59,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 18:26:59,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 18:26:59,377 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 18:26:59,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:59" (1/1) ... [2020-10-27 18:26:59,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:59" (1/1) ... [2020-10-27 18:26:59,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:59" (1/1) ... [2020-10-27 18:26:59,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:59" (1/1) ... [2020-10-27 18:26:59,550 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:59" (1/1) ... [2020-10-27 18:26:59,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:59" (1/1) ... [2020-10-27 18:26:59,607 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:59" (1/1) ... [2020-10-27 18:26:59,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 18:26:59,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 18:26:59,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 18:26:59,640 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 18:26:59,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:59" (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 [2020-10-27 18:26:59,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 18:26:59,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 18:26:59,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 18:26:59,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 18:26:59,723 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 18:26:59,723 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 18:26:59,723 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 18:26:59,724 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 18:26:59,724 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 18:26:59,724 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 18:26:59,724 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 18:26:59,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 18:26:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 18:26:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 18:26:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 18:26:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 18:26:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 18:26:59,725 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 18:26:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 18:26:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 18:26:59,726 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 18:27:03,276 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 18:27:03,276 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 18:27:03,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:27:03 BoogieIcfgContainer [2020-10-27 18:27:03,281 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 18:27:03,284 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 18:27:03,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 18:27:03,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 18:27:03,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 06:26:57" (1/3) ... [2020-10-27 18:27:03,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3337834c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:27:03, skipping insertion in model container [2020-10-27 18:27:03,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:26:59" (2/3) ... [2020-10-27 18:27:03,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3337834c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 06:27:03, skipping insertion in model container [2020-10-27 18:27:03,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:27:03" (3/3) ... [2020-10-27 18:27:03,293 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label31.c [2020-10-27 18:27:03,309 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 18:27:03,316 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 18:27:03,330 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 18:27:03,379 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 18:27:03,379 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 18:27:03,379 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 18:27:03,379 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 18:27:03,379 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 18:27:03,380 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 18:27:03,380 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 18:27:03,380 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 18:27:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-27 18:27:03,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 18:27:03,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:27:03,439 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:27:03,439 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:27:03,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:27:03,448 INFO L82 PathProgramCache]: Analyzing trace with hash 1588391441, now seen corresponding path program 1 times [2020-10-27 18:27:03,458 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:27:03,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41269394] [2020-10-27 18:27:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:27:03,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:03,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:04,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:04,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 18:27:04,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:04,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 653 [2020-10-27 18:27:04,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:04,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 18:27:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 18:27:04,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 18:27:04,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 18:27:04,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:27:04,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:04,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:04,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:04,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:27:04,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:04,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 18:27:04,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:27:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:04,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:27:04,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:04,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:27:04,754 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41269394] [2020-10-27 18:27:04,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 18:27:04,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 18:27:04,758 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048744477] [2020-10-27 18:27:04,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 18:27:04,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:27:04,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 18:27:04,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 18:27:04,795 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-27 18:27:11,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:27:11,383 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-27 18:27:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:27:11,385 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 72 [2020-10-27 18:27:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:27:11,408 INFO L225 Difference]: With dead ends: 1204 [2020-10-27 18:27:11,408 INFO L226 Difference]: Without dead ends: 698 [2020-10-27 18:27:11,423 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 [2020-10-27 18:27:11,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-27 18:27:11,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-27 18:27:11,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-27 18:27:11,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-27 18:27:11,538 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 72 [2020-10-27 18:27:11,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:27:11,539 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-27 18:27:11,540 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 18:27:11,540 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-27 18:27:11,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 18:27:11,547 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:27:11,548 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:27:11,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 18:27:11,549 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:27:11,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:27:11,549 INFO L82 PathProgramCache]: Analyzing trace with hash -1110631610, now seen corresponding path program 1 times [2020-10-27 18:27:11,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:27:11,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [428326625] [2020-10-27 18:27:11,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:27:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:11,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:12,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:16,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:16,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 18:27:16,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:27:16,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4541 [2020-10-27 18:27:16,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:27:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 18:27:16,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 18:27:16,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:27:16,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:27:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:16,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:16,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:27:16,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:16,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:27:16,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:16,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:16,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:16,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:27:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:16,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:16,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:16,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 18:27:16,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:16,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 18:27:16,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:27:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:16,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 18:27:16,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 63 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 18:27:16,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [428326625] [2020-10-27 18:27:16,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:27:16,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:27:16,659 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243197845] [2020-10-27 18:27:16,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:27:16,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:27:16,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:27:16,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:27:16,667 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 6 states. [2020-10-27 18:27:25,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:27:25,752 INFO L93 Difference]: Finished difference Result 2637 states and 3906 transitions. [2020-10-27 18:27:25,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:27:25,753 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2020-10-27 18:27:25,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:27:25,773 INFO L225 Difference]: With dead ends: 2637 [2020-10-27 18:27:25,773 INFO L226 Difference]: Without dead ends: 1951 [2020-10-27 18:27:25,777 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:27:25,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1951 states. [2020-10-27 18:27:25,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1951 to 1945. [2020-10-27 18:27:25,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2020-10-27 18:27:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 2602 transitions. [2020-10-27 18:27:25,908 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 2602 transitions. Word has length 141 [2020-10-27 18:27:25,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:27:25,917 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 2602 transitions. [2020-10-27 18:27:25,917 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:27:25,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 2602 transitions. [2020-10-27 18:27:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-27 18:27:25,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:27:25,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:27:25,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 18:27:25,937 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:27:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:27:25,939 INFO L82 PathProgramCache]: Analyzing trace with hash 901381344, now seen corresponding path program 1 times [2020-10-27 18:27:25,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:27:25,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566330840] [2020-10-27 18:27:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:27:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:26,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:26,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:26,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:27,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:27,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:28,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:29,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:31,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:31,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-27 18:27:31,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:27:31,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 18:27:31,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:27:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 262 [2020-10-27 18:27:31,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-27 18:27:31,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:31,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:27:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:31,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:31,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:31,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:27:31,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:31,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:27:31,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:31,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:31,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:31,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:27:31,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:31,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:31,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:31,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:27:31,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 18:27:31,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:31,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:31,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:31,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:27:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:31,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:31,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:31,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:31,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:31,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-27 18:27:31,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 18:27:31,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 317 [2020-10-27 18:27:31,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:27:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 150 [2020-10-27 18:27:31,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:27:31,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:31,949 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-10-27 18:27:31,950 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566330840] [2020-10-27 18:27:31,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:27:31,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:27:31,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784644546] [2020-10-27 18:27:31,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:27:31,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:27:31,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:27:31,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:27:31,953 INFO L87 Difference]: Start difference. First operand 1945 states and 2602 transitions. Second operand 6 states. [2020-10-27 18:27:44,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:27:44,756 INFO L93 Difference]: Finished difference Result 5127 states and 7054 transitions. [2020-10-27 18:27:44,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:27:44,758 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 324 [2020-10-27 18:27:44,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:27:44,779 INFO L225 Difference]: With dead ends: 5127 [2020-10-27 18:27:44,780 INFO L226 Difference]: Without dead ends: 3188 [2020-10-27 18:27:44,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:27:44,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3188 states. [2020-10-27 18:27:44,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3188 to 3184. [2020-10-27 18:27:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3184 states. [2020-10-27 18:27:44,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3184 states to 3184 states and 4315 transitions. [2020-10-27 18:27:44,896 INFO L78 Accepts]: Start accepts. Automaton has 3184 states and 4315 transitions. Word has length 324 [2020-10-27 18:27:44,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:27:44,897 INFO L481 AbstractCegarLoop]: Abstraction has 3184 states and 4315 transitions. [2020-10-27 18:27:44,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:27:44,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3184 states and 4315 transitions. [2020-10-27 18:27:44,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2020-10-27 18:27:44,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:27:44,909 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:27:44,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 18:27:44,909 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:27:44,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:27:44,910 INFO L82 PathProgramCache]: Analyzing trace with hash 296345719, now seen corresponding path program 1 times [2020-10-27 18:27:44,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:27:44,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236270230] [2020-10-27 18:27:44,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:27:44,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:45,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:45,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:45,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:46,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:48,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:50,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:50,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 361 [2020-10-27 18:27:50,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:27:50,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 18:27:50,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:50,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:27:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 186 [2020-10-27 18:27:50,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 18:27:50,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:50,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:27:50,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:50,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:50,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:50,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:27:50,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:50,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 18:27:50,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:50,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:50,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-27 18:27:50,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:27:50,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:50,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:50,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:50,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:27:50,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:50,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 18:27:50,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:50,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:27:50,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:50,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:27:50,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:50,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:27:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:50,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:50,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:50,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:27:50,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:50,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 18:27:50,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:50,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:27:50,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:27:50,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-27 18:27:50,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:50,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:27:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:27:50,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:27:50,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:27:50,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 18:27:50,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:27:50,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-27 18:27:50,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:27:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:27:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:27:50,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 18:27:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:27:51,127 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 365 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-27 18:27:51,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236270230] [2020-10-27 18:27:51,128 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:27:51,128 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:27:51,128 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677889613] [2020-10-27 18:27:51,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:27:51,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:27:51,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:27:51,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:27:51,133 INFO L87 Difference]: Start difference. First operand 3184 states and 4315 transitions. Second operand 7 states. [2020-10-27 18:28:04,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:28:04,994 INFO L93 Difference]: Finished difference Result 8969 states and 12780 transitions. [2020-10-27 18:28:04,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:28:04,996 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 345 [2020-10-27 18:28:04,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:28:05,048 INFO L225 Difference]: With dead ends: 8969 [2020-10-27 18:28:05,048 INFO L226 Difference]: Without dead ends: 5791 [2020-10-27 18:28:05,061 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:28:05,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5791 states. [2020-10-27 18:28:05,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5791 to 5435. [2020-10-27 18:28:05,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5435 states. [2020-10-27 18:28:05,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5435 states to 5435 states and 7546 transitions. [2020-10-27 18:28:05,344 INFO L78 Accepts]: Start accepts. Automaton has 5435 states and 7546 transitions. Word has length 345 [2020-10-27 18:28:05,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:28:05,345 INFO L481 AbstractCegarLoop]: Abstraction has 5435 states and 7546 transitions. [2020-10-27 18:28:05,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:28:05,345 INFO L276 IsEmpty]: Start isEmpty. Operand 5435 states and 7546 transitions. [2020-10-27 18:28:05,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-10-27 18:28:05,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:28:05,358 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:28:05,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 18:28:05,359 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:28:05,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:28:05,359 INFO L82 PathProgramCache]: Analyzing trace with hash -464305089, now seen corresponding path program 1 times [2020-10-27 18:28:05,360 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:28:05,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1009080675] [2020-10-27 18:28:05,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:28:05,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:05,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:05,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:06,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:09,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:10,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:10,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 365 [2020-10-27 18:28:10,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 18:28:10,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 18:28:10,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:28:10,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 190 [2020-10-27 18:28:10,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 18:28:10,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:10,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:28:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:10,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:10,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:28:10,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 18:28:10,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:10,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:10,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:10,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:28:10,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:10,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:10,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:10,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:28:10,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 18:28:10,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:10,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:28:10,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:10,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:10,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:10,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-27 18:28:10,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:10,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 18:28:10,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:10,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:28:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:10,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 18:28:10,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 18:28:10,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-27 18:28:10,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:10,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:11,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:11,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:11,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 18:28:11,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:28:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 704 [2020-10-27 18:28:11,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:28:11,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:28:11,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 18:28:11,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:11,876 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 369 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-27 18:28:11,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1009080675] [2020-10-27 18:28:11,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:28:11,877 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:28:11,877 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393412160] [2020-10-27 18:28:11,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:28:11,878 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:28:11,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:28:11,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:28:11,879 INFO L87 Difference]: Start difference. First operand 5435 states and 7546 transitions. Second operand 7 states. [2020-10-27 18:28:25,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:28:25,103 INFO L93 Difference]: Finished difference Result 12836 states and 18066 transitions. [2020-10-27 18:28:25,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 18:28:25,106 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 349 [2020-10-27 18:28:25,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:28:25,147 INFO L225 Difference]: With dead ends: 12836 [2020-10-27 18:28:25,147 INFO L226 Difference]: Without dead ends: 6786 [2020-10-27 18:28:25,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 18:28:25,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6786 states. [2020-10-27 18:28:25,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6786 to 6729. [2020-10-27 18:28:25,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6729 states. [2020-10-27 18:28:25,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6729 states to 6729 states and 9217 transitions. [2020-10-27 18:28:25,435 INFO L78 Accepts]: Start accepts. Automaton has 6729 states and 9217 transitions. Word has length 349 [2020-10-27 18:28:25,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:28:25,435 INFO L481 AbstractCegarLoop]: Abstraction has 6729 states and 9217 transitions. [2020-10-27 18:28:25,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:28:25,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6729 states and 9217 transitions. [2020-10-27 18:28:25,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-27 18:28:25,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:28:25,450 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:28:25,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 18:28:25,451 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:28:25,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:28:25,452 INFO L82 PathProgramCache]: Analyzing trace with hash -177063335, now seen corresponding path program 1 times [2020-10-27 18:28:25,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:28:25,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650159632] [2020-10-27 18:28:25,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:28:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:25,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:25,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:25,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:27,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:27,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:28,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:30,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:30,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-27 18:28:30,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:28:30,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 18:28:30,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:30,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:28:30,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 18:28:30,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 18:28:30,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:30,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:28:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:30,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:30,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:30,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:28:30,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:28:30,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:30,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:30,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:28:30,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:30,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:30,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:30,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:28:30,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:30,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 18:28:30,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:30,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:30,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:30,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:30,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:28:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:30,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:31,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:31,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 18:28:31,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:31,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 18:28:31,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:28:31,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:31,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 18:28:31,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 18:28:31,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-27 18:28:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:31,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:31,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:31,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:31,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 18:28:31,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:28:31,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-27 18:28:31,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:28:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:28:31,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 18:28:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:31,923 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 372 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-27 18:28:31,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [650159632] [2020-10-27 18:28:31,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:28:31,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 18:28:31,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989821737] [2020-10-27 18:28:31,925 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 18:28:31,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:28:31,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 18:28:31,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:28:31,927 INFO L87 Difference]: Start difference. First operand 6729 states and 9217 transitions. Second operand 6 states. [2020-10-27 18:28:32,189 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 18:28:39,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:28:39,591 INFO L93 Difference]: Finished difference Result 12266 states and 17044 transitions. [2020-10-27 18:28:39,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:28:39,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 352 [2020-10-27 18:28:39,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:28:39,626 INFO L225 Difference]: With dead ends: 12266 [2020-10-27 18:28:39,626 INFO L226 Difference]: Without dead ends: 6752 [2020-10-27 18:28:39,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:28:39,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6752 states. [2020-10-27 18:28:39,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6752 to 6727. [2020-10-27 18:28:39,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6727 states. [2020-10-27 18:28:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6727 states to 6727 states and 9204 transitions. [2020-10-27 18:28:39,850 INFO L78 Accepts]: Start accepts. Automaton has 6727 states and 9204 transitions. Word has length 352 [2020-10-27 18:28:39,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:28:39,851 INFO L481 AbstractCegarLoop]: Abstraction has 6727 states and 9204 transitions. [2020-10-27 18:28:39,851 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 18:28:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 6727 states and 9204 transitions. [2020-10-27 18:28:39,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2020-10-27 18:28:39,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:28:39,865 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:28:39,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 18:28:39,866 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:28:39,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:28:39,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1310405113, now seen corresponding path program 1 times [2020-10-27 18:28:39,867 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:28:39,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [717447830] [2020-10-27 18:28:39,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:28:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:39,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:40,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:40,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:40,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:42,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:45,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:45,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:45,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 386 [2020-10-27 18:28:45,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:28:45,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5139 [2020-10-27 18:28:45,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:28:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-27 18:28:45,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 18:28:45,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:45,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:28:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:45,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:45,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:45,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:28:45,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 18:28:45,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:45,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:28:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:45,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:45,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:45,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:28:45,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:45,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 18:28:45,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:45,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:45,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:45,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:28:45,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:45,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:45,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:45,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:28:45,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 18:28:45,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:28:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:45,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:28:45,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:45,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:28:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:45,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:45,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:28:45,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 18:28:45,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:28:45,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 18:28:45,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:28:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:28:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:28:45,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 18:28:45,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:28:45,863 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-27 18:28:45,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [717447830] [2020-10-27 18:28:45,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:28:45,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:28:45,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732630819] [2020-10-27 18:28:45,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:28:45,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:28:45,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:28:45,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:28:45,865 INFO L87 Difference]: Start difference. First operand 6727 states and 9204 transitions. Second operand 5 states. [2020-10-27 18:28:56,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:28:56,307 INFO L93 Difference]: Finished difference Result 15049 states and 21337 transitions. [2020-10-27 18:28:56,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:28:56,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 370 [2020-10-27 18:28:56,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:28:56,360 INFO L225 Difference]: With dead ends: 15049 [2020-10-27 18:28:56,360 INFO L226 Difference]: Without dead ends: 9558 [2020-10-27 18:28:56,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:28:56,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9558 states. [2020-10-27 18:28:56,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9558 to 9535. [2020-10-27 18:28:56,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9535 states. [2020-10-27 18:28:56,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9535 states to 9535 states and 13459 transitions. [2020-10-27 18:28:56,650 INFO L78 Accepts]: Start accepts. Automaton has 9535 states and 13459 transitions. Word has length 370 [2020-10-27 18:28:56,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:28:56,652 INFO L481 AbstractCegarLoop]: Abstraction has 9535 states and 13459 transitions. [2020-10-27 18:28:56,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:28:56,652 INFO L276 IsEmpty]: Start isEmpty. Operand 9535 states and 13459 transitions. [2020-10-27 18:28:56,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2020-10-27 18:28:56,670 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:28:56,670 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:28:56,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 18:28:56,671 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:28:56,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:28:56,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1431280634, now seen corresponding path program 1 times [2020-10-27 18:28:56,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:28:56,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135159709] [2020-10-27 18:28:56,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:28:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:28:56,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:56,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:57,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:28:57,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:01,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:01,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 390 [2020-10-27 18:29:01,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 18:29:01,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-27 18:29:01,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:29:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 316 [2020-10-27 18:29:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 18:29:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:02,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:29:02,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:02,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:02,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:02,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:29:02,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:02,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:29:02,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:02,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:29:02,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:02,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:02,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:02,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:29:02,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 18:29:02,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:02,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:29:02,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:02,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:02,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:02,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:29:02,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:02,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 18:29:02,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:02,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:29:02,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:02,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:02,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:02,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 18:29:02,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:02,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 18:29:02,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:29:02,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:02,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 18:29:02,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 445 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-10-27 18:29:02,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135159709] [2020-10-27 18:29:02,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:29:02,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:29:02,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070336261] [2020-10-27 18:29:02,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:29:02,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:29:02,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:29:02,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:29:02,704 INFO L87 Difference]: Start difference. First operand 9535 states and 13459 transitions. Second operand 5 states. [2020-10-27 18:29:06,246 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 18:29:10,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:29:10,439 INFO L93 Difference]: Finished difference Result 17547 states and 25143 transitions. [2020-10-27 18:29:10,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:29:10,442 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 374 [2020-10-27 18:29:10,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:29:10,482 INFO L225 Difference]: With dead ends: 17547 [2020-10-27 18:29:10,483 INFO L226 Difference]: Without dead ends: 9537 [2020-10-27 18:29:10,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:29:10,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9537 states. [2020-10-27 18:29:10,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9537 to 9535. [2020-10-27 18:29:10,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9535 states. [2020-10-27 18:29:10,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9535 states to 9535 states and 13441 transitions. [2020-10-27 18:29:10,827 INFO L78 Accepts]: Start accepts. Automaton has 9535 states and 13441 transitions. Word has length 374 [2020-10-27 18:29:10,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:29:10,828 INFO L481 AbstractCegarLoop]: Abstraction has 9535 states and 13441 transitions. [2020-10-27 18:29:10,828 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:29:10,828 INFO L276 IsEmpty]: Start isEmpty. Operand 9535 states and 13441 transitions. [2020-10-27 18:29:10,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-10-27 18:29:10,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:29:10,850 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:29:10,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 18:29:10,850 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:29:10,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:29:10,851 INFO L82 PathProgramCache]: Analyzing trace with hash -1078251646, now seen corresponding path program 1 times [2020-10-27 18:29:10,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:29:10,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [211943390] [2020-10-27 18:29:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:29:10,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:10,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:11,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:11,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:11,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:11,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:12,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:14,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:15,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:15,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 405 [2020-10-27 18:29:15,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 18:29:15,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 18:29:15,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:29:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 229 [2020-10-27 18:29:15,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 18:29:15,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:16,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:29:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:16,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:16,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:16,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:29:16,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:16,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 18:29:16,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:16,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:16,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:29:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:16,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:16,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:16,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:29:16,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:16,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:29:16,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:16,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:16,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:16,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:29:16,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:16,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:16,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:29:16,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:16,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 18:29:16,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:29:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:16,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 18:29:16,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:16,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 18:29:16,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:16,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:16,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 18:29:16,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:16,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 18:29:16,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:29:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:29:16,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 18:29:16,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:16,626 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-27 18:29:16,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [211943390] [2020-10-27 18:29:16,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:29:16,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 18:29:16,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051109216] [2020-10-27 18:29:16,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 18:29:16,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:29:16,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 18:29:16,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 18:29:16,629 INFO L87 Difference]: Start difference. First operand 9535 states and 13441 transitions. Second operand 7 states. [2020-10-27 18:29:26,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:29:26,867 INFO L93 Difference]: Finished difference Result 22293 states and 32589 transitions. [2020-10-27 18:29:26,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 18:29:26,869 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 389 [2020-10-27 18:29:26,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:29:26,930 INFO L225 Difference]: With dead ends: 22293 [2020-10-27 18:29:26,930 INFO L226 Difference]: Without dead ends: 12768 [2020-10-27 18:29:26,954 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 18:29:26,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12768 states. [2020-10-27 18:29:27,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12768 to 10571. [2020-10-27 18:29:27,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10571 states. [2020-10-27 18:29:27,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10571 states to 10571 states and 15653 transitions. [2020-10-27 18:29:27,299 INFO L78 Accepts]: Start accepts. Automaton has 10571 states and 15653 transitions. Word has length 389 [2020-10-27 18:29:27,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:29:27,300 INFO L481 AbstractCegarLoop]: Abstraction has 10571 states and 15653 transitions. [2020-10-27 18:29:27,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 18:29:27,300 INFO L276 IsEmpty]: Start isEmpty. Operand 10571 states and 15653 transitions. [2020-10-27 18:29:27,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-10-27 18:29:27,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:29:27,323 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:29:27,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 18:29:27,324 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:29:27,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:29:27,324 INFO L82 PathProgramCache]: Analyzing trace with hash 225536501, now seen corresponding path program 1 times [2020-10-27 18:29:27,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:29:27,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861048541] [2020-10-27 18:29:27,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:29:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:27,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:27,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:27,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:27,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:28,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:32,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:32,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 407 [2020-10-27 18:29:32,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 18:29:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-27 18:29:32,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 18:29:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 333 [2020-10-27 18:29:32,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 18:29:32,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:32,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:29:32,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:32,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:32,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:32,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:29:32,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:32,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 18:29:32,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:32,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:32,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:32,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:29:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:32,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:32,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:32,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:29:32,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:32,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 18:29:32,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:32,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:32,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:32,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:29:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:32,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:32,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:32,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 18:29:32,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 18:29:32,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:32,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:32,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:32,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2020-10-27 18:29:32,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:32,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:32,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:32,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 18:29:32,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:32,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 18:29:32,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:32,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:29:32,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:32,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 18:29:32,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:33,079 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 195 proven. 3 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2020-10-27 18:29:33,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861048541] [2020-10-27 18:29:33,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:29:33,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:29:33,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634909610] [2020-10-27 18:29:33,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:29:33,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:29:33,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:29:33,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:29:33,081 INFO L87 Difference]: Start difference. First operand 10571 states and 15653 transitions. Second operand 5 states. [2020-10-27 18:29:39,001 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 18:29:45,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:29:45,209 INFO L93 Difference]: Finished difference Result 21158 states and 31459 transitions. [2020-10-27 18:29:45,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:29:45,211 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2020-10-27 18:29:45,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:29:45,257 INFO L225 Difference]: With dead ends: 21158 [2020-10-27 18:29:45,257 INFO L226 Difference]: Without dead ends: 10575 [2020-10-27 18:29:45,286 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:29:45,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10575 states. [2020-10-27 18:29:45,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10575 to 10571. [2020-10-27 18:29:45,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10571 states. [2020-10-27 18:29:45,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10571 states to 10571 states and 15635 transitions. [2020-10-27 18:29:45,610 INFO L78 Accepts]: Start accepts. Automaton has 10571 states and 15635 transitions. Word has length 391 [2020-10-27 18:29:45,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:29:45,611 INFO L481 AbstractCegarLoop]: Abstraction has 10571 states and 15635 transitions. [2020-10-27 18:29:45,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:29:45,611 INFO L276 IsEmpty]: Start isEmpty. Operand 10571 states and 15635 transitions. [2020-10-27 18:29:45,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2020-10-27 18:29:45,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:29:45,636 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 18:29:45,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 18:29:45,636 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:29:45,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:29:45,638 INFO L82 PathProgramCache]: Analyzing trace with hash -2080285157, now seen corresponding path program 1 times [2020-10-27 18:29:45,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:29:45,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591700296] [2020-10-27 18:29:45,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:29:45,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:45,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:45,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:46,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:46,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:46,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:46,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:48,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:48,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:50,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:50,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 444 [2020-10-27 18:29:50,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 18:29:50,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 18:29:50,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:29:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 267 [2020-10-27 18:29:50,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:29:50,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:50,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:29:50,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:50,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:50,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:50,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:29:50,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:29:50,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:50,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:29:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:50,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:50,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:50,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:29:50,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:50,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 18:29:50,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:50,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:29:50,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:50,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:51,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:29:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:51,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:51,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:51,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 18:29:51,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:51,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 18:29:51,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:29:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-27 18:29:51,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 18:29:51,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2020-10-27 18:29:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:29:51,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:29:51,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:29:51,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 18:29:51,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:29:51,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 18:29:51,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:29:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:29:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 18:29:51,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:29:51,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:29:51,336 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 199 proven. 2 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-10-27 18:29:51,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591700296] [2020-10-27 18:29:51,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:29:51,337 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 18:29:51,337 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265653030] [2020-10-27 18:29:51,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 18:29:51,338 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:29:51,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 18:29:51,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 18:29:51,338 INFO L87 Difference]: Start difference. First operand 10571 states and 15635 transitions. Second operand 5 states. [2020-10-27 18:30:04,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:30:04,174 INFO L93 Difference]: Finished difference Result 24547 states and 36689 transitions. [2020-10-27 18:30:04,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 18:30:04,176 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 428 [2020-10-27 18:30:04,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:30:04,242 INFO L225 Difference]: With dead ends: 24547 [2020-10-27 18:30:04,242 INFO L226 Difference]: Without dead ends: 13982 [2020-10-27 18:30:04,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 18:30:04,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13982 states. [2020-10-27 18:30:04,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13982 to 13969. [2020-10-27 18:30:04,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13969 states. [2020-10-27 18:30:04,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13969 states to 13969 states and 20606 transitions. [2020-10-27 18:30:04,714 INFO L78 Accepts]: Start accepts. Automaton has 13969 states and 20606 transitions. Word has length 428 [2020-10-27 18:30:04,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:30:04,715 INFO L481 AbstractCegarLoop]: Abstraction has 13969 states and 20606 transitions. [2020-10-27 18:30:04,715 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 18:30:04,715 INFO L276 IsEmpty]: Start isEmpty. Operand 13969 states and 20606 transitions. [2020-10-27 18:30:04,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 451 [2020-10-27 18:30:04,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:30:04,743 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:30:04,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 18:30:04,743 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:30:04,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:30:04,744 INFO L82 PathProgramCache]: Analyzing trace with hash 658772653, now seen corresponding path program 1 times [2020-10-27 18:30:04,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:30:04,744 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895760595] [2020-10-27 18:30:04,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:30:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:04,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:05,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:05,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:05,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:05,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:06,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:07,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:09,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:09,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 468 [2020-10-27 18:30:09,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 18:30:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 18:30:09,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 18:30:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 293 [2020-10-27 18:30:09,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 18:30:09,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:10,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 18:30:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:10,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:10,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 18:30:10,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:10,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 18:30:10,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:10,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:10,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:10,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 18:30:10,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:10,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:10,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:10,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 18:30:10,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:10,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 18:30:10,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:10,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:10,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:10,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 18:30:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:10,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:10,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:10,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-27 18:30:10,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:10,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 18:30:10,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 18:30:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 18:30:10,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:10,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 18:30:10,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:10,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:10,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-27 18:30:10,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 18:30:10,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 18:30:10,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 18:30:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 18:30:10,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 18:30:10,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:10,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2020-10-27 18:30:10,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:10,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:10,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:10,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 18:30:10,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-27 18:30:10,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 18:30:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-27 18:30:10,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 18:30:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 18:30:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 18:30:10,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-27 18:30:10,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 18:30:11,128 INFO L134 CoverageAnalysis]: Checked inductivity of 780 backedges. 516 proven. 14 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2020-10-27 18:30:11,128 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [895760595] [2020-10-27 18:30:11,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 18:30:11,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 18:30:11,129 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905104873] [2020-10-27 18:30:11,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 18:30:11,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 18:30:11,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 18:30:11,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 18:30:11,131 INFO L87 Difference]: Start difference. First operand 13969 states and 20606 transitions. Second operand 8 states. [2020-10-27 18:30:15,063 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-27 18:30:27,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 18:30:27,499 INFO L93 Difference]: Finished difference Result 30734 states and 45936 transitions. [2020-10-27 18:30:27,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 18:30:27,501 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 450 [2020-10-27 18:30:27,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 18:30:27,575 INFO L225 Difference]: With dead ends: 30734 [2020-10-27 18:30:27,575 INFO L226 Difference]: Without dead ends: 16771 [2020-10-27 18:30:27,598 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 18:30:27,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16771 states. [2020-10-27 18:30:27,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16771 to 16144. [2020-10-27 18:30:27,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16144 states. [2020-10-27 18:30:28,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16144 states to 16144 states and 23136 transitions. [2020-10-27 18:30:28,040 INFO L78 Accepts]: Start accepts. Automaton has 16144 states and 23136 transitions. Word has length 450 [2020-10-27 18:30:28,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 18:30:28,041 INFO L481 AbstractCegarLoop]: Abstraction has 16144 states and 23136 transitions. [2020-10-27 18:30:28,041 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 18:30:28,041 INFO L276 IsEmpty]: Start isEmpty. Operand 16144 states and 23136 transitions. [2020-10-27 18:30:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-27 18:30:28,068 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 18:30:28,069 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 18:30:28,069 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 18:30:28,069 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 18:30:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 18:30:28,070 INFO L82 PathProgramCache]: Analyzing trace with hash 2109975481, now seen corresponding path program 1 times [2020-10-27 18:30:28,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 18:30:28,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1239466743] [2020-10-27 18:30:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 18:30:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 18:30:28,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:28,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 18:30:28,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking...