/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/Problem18_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:17:40,479 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:17:40,482 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:17:40,519 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:17:40,520 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:17:40,521 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:17:40,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:17:40,526 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:17:40,528 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:17:40,529 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:17:40,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:17:40,532 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:17:40,532 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:17:40,533 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:17:40,535 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:17:40,536 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:17:40,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:17:40,538 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:17:40,540 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:17:40,542 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:17:40,544 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:17:40,546 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:17:40,547 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:17:40,548 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:17:40,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:17:40,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:17:40,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:17:40,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:17:40,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:17:40,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:17:40,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:17:40,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:17:40,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:17:40,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:17:40,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:17:40,563 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:17:40,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:17:40,565 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:17:40,566 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:17:40,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:17:40,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:17:40,570 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 19:17:40,625 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:17:40,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:17:40,627 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:17:40,627 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:17:40,627 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:17:40,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:17:40,628 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:17:40,628 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:17:40,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:17:40,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:17:40,629 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:17:40,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:17:40,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:17:40,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:17:40,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:17:40,629 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:17:40,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:17:40,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:17:40,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:17:40,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:17:40,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:17:40,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:17:40,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:17:40,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:17:40,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:17:40,632 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:17:40,632 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:17:40,632 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:17:40,632 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:17:40,632 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:17:40,984 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:17:41,008 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:17:41,011 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:17:41,012 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:17:41,013 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:17:41,014 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label57.c [2020-10-27 19:17:41,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42d104c2/cc635dd051a541abac16ad94a14cf7c5/FLAG659c0d329 [2020-10-27 19:17:42,055 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:17:42,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem18_label57.c [2020-10-27 19:17:42,080 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42d104c2/cc635dd051a541abac16ad94a14cf7c5/FLAG659c0d329 [2020-10-27 19:17:42,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f42d104c2/cc635dd051a541abac16ad94a14cf7c5 [2020-10-27 19:17:42,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:17:42,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:17:42,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:17:42,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:17:42,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:17:42,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:17:42" (1/1) ... [2020-10-27 19:17:42,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48c096cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:17:42, skipping insertion in model container [2020-10-27 19:17:42,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:17:42" (1/1) ... [2020-10-27 19:17:42,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:17:42,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:17:43,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:17:43,368 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:17:43,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:17:43,897 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:17:43,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:17:43 WrapperNode [2020-10-27 19:17:43,898 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:17:43,899 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:17:43,900 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:17:43,900 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:17:43,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:17:43" (1/1) ... [2020-10-27 19:17:43,915 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:17:43" (1/1) ... [2020-10-27 19:17:43,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:17:43" (1/1) ... [2020-10-27 19:17:43,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:17:43" (1/1) ... [2020-10-27 19:17:44,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:17:43" (1/1) ... [2020-10-27 19:17:44,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:17:43" (1/1) ... [2020-10-27 19:17:44,107 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:17:43" (1/1) ... [2020-10-27 19:17:44,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:17:44,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:17:44,139 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:17:44,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:17:44,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:17:43" (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 19:17:44,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:17:44,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:17:44,211 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:17:44,211 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 19:17:44,211 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 19:17:44,211 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 19:17:44,212 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:17:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 19:17:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 19:17:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 19:17:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:17:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:17:44,212 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:17:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:17:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:17:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:17:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:17:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:17:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:17:44,213 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:17:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:17:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:17:44,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:17:47,985 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:17:47,986 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 19:17:47,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:17:47 BoogieIcfgContainer [2020-10-27 19:17:47,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:17:47,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:17:47,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:17:47,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:17:47,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:17:42" (1/3) ... [2020-10-27 19:17:47,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d141078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:17:47, skipping insertion in model container [2020-10-27 19:17:47,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:17:43" (2/3) ... [2020-10-27 19:17:47,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d141078 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:17:47, skipping insertion in model container [2020-10-27 19:17:47,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:17:47" (3/3) ... [2020-10-27 19:17:47,997 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem18_label57.c [2020-10-27 19:17:48,009 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:17:48,014 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:17:48,028 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:17:48,060 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:17:48,060 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:17:48,061 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:17:48,061 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:17:48,061 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:17:48,061 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:17:48,061 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:17:48,061 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:17:48,094 INFO L276 IsEmpty]: Start isEmpty. Operand 778 states. [2020-10-27 19:17:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 19:17:48,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:17:48,104 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:17:48,105 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:17:48,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:17:48,111 INFO L82 PathProgramCache]: Analyzing trace with hash -392694216, now seen corresponding path program 1 times [2020-10-27 19:17:48,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:17:48,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118526403] [2020-10-27 19:17:48,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:17:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:48,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:48,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:48,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:17:48,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:48,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-27 19:17:48,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:17:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:17:48,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:17:48,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 19:17:48,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:17:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:48,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:48,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:48,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:17:48,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:48,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 19:17:48,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:48,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:17:48,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:48,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:17:48,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:48,911 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 19:17:48,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118526403] [2020-10-27 19:17:48,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:17:48,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 19:17:48,915 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793369278] [2020-10-27 19:17:48,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:17:48,920 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:17:48,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:17:48,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:17:48,942 INFO L87 Difference]: Start difference. First operand 778 states. Second operand 4 states. [2020-10-27 19:17:57,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:17:57,593 INFO L93 Difference]: Finished difference Result 2275 states and 4355 transitions. [2020-10-27 19:17:57,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:17:57,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-27 19:17:57,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:17:57,627 INFO L225 Difference]: With dead ends: 2275 [2020-10-27 19:17:57,627 INFO L226 Difference]: Without dead ends: 1433 [2020-10-27 19:17:57,644 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 19:17:57,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1433 states. [2020-10-27 19:17:57,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1433 to 1426. [2020-10-27 19:17:57,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2020-10-27 19:17:57,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 2332 transitions. [2020-10-27 19:17:57,789 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 2332 transitions. Word has length 15 [2020-10-27 19:17:57,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:17:57,790 INFO L481 AbstractCegarLoop]: Abstraction has 1426 states and 2332 transitions. [2020-10-27 19:17:57,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:17:57,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 2332 transitions. [2020-10-27 19:17:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 19:17:57,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:17:57,797 INFO L422 BasicCegarLoop]: trace histogram [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 19:17:57,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:17:57,798 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:17:57,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:17:57,799 INFO L82 PathProgramCache]: Analyzing trace with hash -1302558639, now seen corresponding path program 1 times [2020-10-27 19:17:57,799 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:17:57,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1659190935] [2020-10-27 19:17:57,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:17:57,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:57,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:58,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:58,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:58,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 19:17:58,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:17:58,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 971 [2020-10-27 19:17:58,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:58,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:17:58,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 19:17:58,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:17:58,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:17:58,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:17:58,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:58,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:58,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:58,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:17:58,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:58,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:17:58,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:17:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:58,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:17:58,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:17:58,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:17:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:17:59,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:17:59,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:17:59,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:17:59,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:17:59,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 19:17:59,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:17:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:17:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:17:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 19:17:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:17:59,111 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:17:59,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1659190935] [2020-10-27 19:17:59,112 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:17:59,112 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:17:59,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727869968] [2020-10-27 19:17:59,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:17:59,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:17:59,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:17:59,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:17:59,118 INFO L87 Difference]: Start difference. First operand 1426 states and 2332 transitions. Second operand 5 states. [2020-10-27 19:18:08,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:18:08,284 INFO L93 Difference]: Finished difference Result 3563 states and 6025 transitions. [2020-10-27 19:18:08,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:18:08,286 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 85 [2020-10-27 19:18:08,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:18:08,302 INFO L225 Difference]: With dead ends: 3563 [2020-10-27 19:18:08,302 INFO L226 Difference]: Without dead ends: 2143 [2020-10-27 19:18:08,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:18:08,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2143 states. [2020-10-27 19:18:08,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2143 to 2139. [2020-10-27 19:18:08,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2139 states. [2020-10-27 19:18:08,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2139 states to 2139 states and 3186 transitions. [2020-10-27 19:18:08,382 INFO L78 Accepts]: Start accepts. Automaton has 2139 states and 3186 transitions. Word has length 85 [2020-10-27 19:18:08,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:18:08,383 INFO L481 AbstractCegarLoop]: Abstraction has 2139 states and 3186 transitions. [2020-10-27 19:18:08,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:18:08,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2139 states and 3186 transitions. [2020-10-27 19:18:08,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-27 19:18:08,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:18:08,389 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:18:08,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:18:08,389 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:18:08,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:18:08,391 INFO L82 PathProgramCache]: Analyzing trace with hash -1082705987, now seen corresponding path program 1 times [2020-10-27 19:18:08,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:18:08,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1261696288] [2020-10-27 19:18:08,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:18:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:08,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:08,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:08,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 19:18:08,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:18:08,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-10-27 19:18:08,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:08,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:18:08,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-27 19:18:08,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:18:08,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:18:09,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:18:09,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:09,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:09,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:09,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:18:09,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:09,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:18:09,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:18:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:09,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:18:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:18:09,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:18:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:09,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:09,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:09,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:18:09,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:09,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 19:18:09,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:09,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:18:09,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:09,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 19:18:09,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:18:09,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1261696288] [2020-10-27 19:18:09,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:18:09,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:18:09,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716780920] [2020-10-27 19:18:09,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:18:09,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:18:09,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:18:09,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:18:09,215 INFO L87 Difference]: Start difference. First operand 2139 states and 3186 transitions. Second operand 5 states. [2020-10-27 19:18:18,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:18:18,628 INFO L93 Difference]: Finished difference Result 4986 states and 7739 transitions. [2020-10-27 19:18:18,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:18:18,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-27 19:18:18,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:18:18,648 INFO L225 Difference]: With dead ends: 4986 [2020-10-27 19:18:18,649 INFO L226 Difference]: Without dead ends: 2853 [2020-10-27 19:18:18,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:18:18,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2853 states. [2020-10-27 19:18:18,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2853 to 2849. [2020-10-27 19:18:18,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2849 states. [2020-10-27 19:18:18,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2849 states to 2849 states and 4161 transitions. [2020-10-27 19:18:18,726 INFO L78 Accepts]: Start accepts. Automaton has 2849 states and 4161 transitions. Word has length 86 [2020-10-27 19:18:18,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:18:18,726 INFO L481 AbstractCegarLoop]: Abstraction has 2849 states and 4161 transitions. [2020-10-27 19:18:18,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:18:18,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2849 states and 4161 transitions. [2020-10-27 19:18:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-27 19:18:18,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:18:18,729 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:18:18,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:18:18,730 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:18:18,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:18:18,730 INFO L82 PathProgramCache]: Analyzing trace with hash -1304458251, now seen corresponding path program 1 times [2020-10-27 19:18:18,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:18:18,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581860475] [2020-10-27 19:18:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:18:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:18,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:19,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:19,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 19:18:19,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:18:19,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-10-27 19:18:19,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:19,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:18:19,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 98 [2020-10-27 19:18:19,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:18:19,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 19:18:19,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:18:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:19,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:19,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:19,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:18:19,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:19,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:18:19,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:19,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:18:19,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:19,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:18:19,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:19,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:18:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:19,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:19,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:19,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:18:19,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:19,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 19:18:19,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:18:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:19,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 19:18:19,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:18:19,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581860475] [2020-10-27 19:18:19,762 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:18:19,762 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:18:19,762 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231137730] [2020-10-27 19:18:19,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:18:19,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:18:19,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:18:19,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:18:19,764 INFO L87 Difference]: Start difference. First operand 2849 states and 4161 transitions. Second operand 5 states. [2020-10-27 19:18:29,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:18:29,196 INFO L93 Difference]: Finished difference Result 8536 states and 12626 transitions. [2020-10-27 19:18:29,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:18:29,200 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 103 [2020-10-27 19:18:29,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:18:29,232 INFO L225 Difference]: With dead ends: 8536 [2020-10-27 19:18:29,232 INFO L226 Difference]: Without dead ends: 5693 [2020-10-27 19:18:29,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:18:29,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5693 states. [2020-10-27 19:18:29,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5693 to 5689. [2020-10-27 19:18:29,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5689 states. [2020-10-27 19:18:29,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5689 states to 5689 states and 8181 transitions. [2020-10-27 19:18:29,383 INFO L78 Accepts]: Start accepts. Automaton has 5689 states and 8181 transitions. Word has length 103 [2020-10-27 19:18:29,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:18:29,384 INFO L481 AbstractCegarLoop]: Abstraction has 5689 states and 8181 transitions. [2020-10-27 19:18:29,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:18:29,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5689 states and 8181 transitions. [2020-10-27 19:18:29,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 19:18:29,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:18:29,392 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:18:29,392 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:18:29,392 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:18:29,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:18:29,393 INFO L82 PathProgramCache]: Analyzing trace with hash 417789249, now seen corresponding path program 1 times [2020-10-27 19:18:29,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:18:29,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804202349] [2020-10-27 19:18:29,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:18:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:29,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:29,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:30,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:30,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 19:18:30,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:18:30,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 937 [2020-10-27 19:18:30,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:18:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 147 [2020-10-27 19:18:30,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:18:30,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:30,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:18:30,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:30,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:30,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:30,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:18:30,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:30,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 19:18:30,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:30,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:18:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:30,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:18:30,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:30,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:18:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:30,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:30,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:30,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 19:18:30,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 19:18:30,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:18:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:30,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 19:18:30,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:30,733 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:18:30,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804202349] [2020-10-27 19:18:30,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:18:30,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 19:18:30,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47463375] [2020-10-27 19:18:30,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 19:18:30,736 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:18:30,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 19:18:30,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:18:30,737 INFO L87 Difference]: Start difference. First operand 5689 states and 8181 transitions. Second operand 5 states. [2020-10-27 19:18:41,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:18:41,240 INFO L93 Difference]: Finished difference Result 17056 states and 24942 transitions. [2020-10-27 19:18:41,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:18:41,243 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 19:18:41,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:18:41,304 INFO L225 Difference]: With dead ends: 17056 [2020-10-27 19:18:41,305 INFO L226 Difference]: Without dead ends: 11373 [2020-10-27 19:18:41,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:18:41,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11373 states. [2020-10-27 19:18:41,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11373 to 11369. [2020-10-27 19:18:41,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11369 states. [2020-10-27 19:18:41,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11369 states to 11369 states and 15094 transitions. [2020-10-27 19:18:41,625 INFO L78 Accepts]: Start accepts. Automaton has 11369 states and 15094 transitions. Word has length 152 [2020-10-27 19:18:41,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:18:41,625 INFO L481 AbstractCegarLoop]: Abstraction has 11369 states and 15094 transitions. [2020-10-27 19:18:41,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 19:18:41,627 INFO L276 IsEmpty]: Start isEmpty. Operand 11369 states and 15094 transitions. [2020-10-27 19:18:41,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-27 19:18:41,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:18:41,645 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:41,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:18:41,645 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:18:41,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:18:41,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1774993726, now seen corresponding path program 1 times [2020-10-27 19:18:41,646 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:18:41,647 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582664405] [2020-10-27 19:18:41,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:18:41,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:41,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:42,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:42,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:46,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:46,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 350 [2020-10-27 19:18:46,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:18:46,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4401 [2020-10-27 19:18:46,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:46,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:18:46,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 333 [2020-10-27 19:18:46,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:18:46,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:46,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:18:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:46,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:46,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:46,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:18:46,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:46,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:18:46,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:46,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:18:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:46,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:18:46,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:46,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:18:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:46,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:46,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:46,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 19:18:46,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:46,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:18:46,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:18:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:46,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:18:46,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:46,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 19:18:46,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:46,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:46,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:18:46,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 19:18:46,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:18:46,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-27 19:18:46,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:18:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:18:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:18:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 247 [2020-10-27 19:18:46,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:18:46,751 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-27 19:18:46,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582664405] [2020-10-27 19:18:46,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:18:46,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:18:46,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989985290] [2020-10-27 19:18:46,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:18:46,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:18:46,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:18:46,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:18:46,756 INFO L87 Difference]: Start difference. First operand 11369 states and 15094 transitions. Second operand 6 states. [2020-10-27 19:18:58,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:18:58,038 INFO L93 Difference]: Finished difference Result 28411 states and 38822 transitions. [2020-10-27 19:18:58,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 19:18:58,040 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 336 [2020-10-27 19:18:58,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:18:58,104 INFO L225 Difference]: With dead ends: 28411 [2020-10-27 19:18:58,104 INFO L226 Difference]: Without dead ends: 17048 [2020-10-27 19:18:58,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:18:58,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17048 states. [2020-10-27 19:18:58,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17048 to 14232. [2020-10-27 19:18:58,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14232 states. [2020-10-27 19:18:58,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14232 states to 14232 states and 19538 transitions. [2020-10-27 19:18:58,481 INFO L78 Accepts]: Start accepts. Automaton has 14232 states and 19538 transitions. Word has length 336 [2020-10-27 19:18:58,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:18:58,482 INFO L481 AbstractCegarLoop]: Abstraction has 14232 states and 19538 transitions. [2020-10-27 19:18:58,482 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:18:58,482 INFO L276 IsEmpty]: Start isEmpty. Operand 14232 states and 19538 transitions. [2020-10-27 19:18:58,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 524 [2020-10-27 19:18:58,514 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:18:58,515 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:18:58,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:18:58,515 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:18:58,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:18:58,516 INFO L82 PathProgramCache]: Analyzing trace with hash -686578466, now seen corresponding path program 1 times [2020-10-27 19:18:58,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:18:58,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1928315310] [2020-10-27 19:18:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:18:58,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:18:58,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:59,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:18:59,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:03,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:03,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 539 [2020-10-27 19:19:03,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:19:03,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-27 19:19:03,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:03,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:19:03,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 519 [2020-10-27 19:19:03,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 19:19:03,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:03,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:19:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:03,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:03,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:19:03,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:03,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:19:03,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:19:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:03,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:19:03,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:19:03,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:19:03,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:03,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:03,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 19:19:03,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:03,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 19:19:03,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:19:03,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:03,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:19:03,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:03,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 19:19:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:04,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:04,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:04,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 440 [2020-10-27 19:19:04,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:04,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-27 19:19:04,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:04,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:19:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:04,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 431 [2020-10-27 19:19:04,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:04,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:19:04,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:04,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:04,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:04,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-27 19:19:04,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:04,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 19:19:04,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:04,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:19:04,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:04,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-27 19:19:04,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:05,241 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-27 19:19:05,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1928315310] [2020-10-27 19:19:05,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:19:05,243 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 19:19:05,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778582574] [2020-10-27 19:19:05,244 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 19:19:05,244 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:19:05,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 19:19:05,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 19:19:05,245 INFO L87 Difference]: Start difference. First operand 14232 states and 19538 transitions. Second operand 6 states. [2020-10-27 19:19:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:19:18,776 INFO L93 Difference]: Finished difference Result 53996 states and 76112 transitions. [2020-10-27 19:19:18,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:19:18,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 523 [2020-10-27 19:19:18,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:19:18,950 INFO L225 Difference]: With dead ends: 53996 [2020-10-27 19:19:18,950 INFO L226 Difference]: Without dead ends: 39770 [2020-10-27 19:19:18,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 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 19:19:19,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39770 states. [2020-10-27 19:19:20,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39770 to 39060. [2020-10-27 19:19:20,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39060 states. [2020-10-27 19:19:20,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39060 states to 39060 states and 53010 transitions. [2020-10-27 19:19:20,330 INFO L78 Accepts]: Start accepts. Automaton has 39060 states and 53010 transitions. Word has length 523 [2020-10-27 19:19:20,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:19:20,330 INFO L481 AbstractCegarLoop]: Abstraction has 39060 states and 53010 transitions. [2020-10-27 19:19:20,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 19:19:20,330 INFO L276 IsEmpty]: Start isEmpty. Operand 39060 states and 53010 transitions. [2020-10-27 19:19:20,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2020-10-27 19:19:20,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:19:20,427 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:19:20,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:19:20,427 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:19:20,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:19:20,428 INFO L82 PathProgramCache]: Analyzing trace with hash -1446621799, now seen corresponding path program 1 times [2020-10-27 19:19:20,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:19:20,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [325912295] [2020-10-27 19:19:20,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:19:20,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:20,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:20,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:24,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:24,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 665 [2020-10-27 19:19:24,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:19:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3618 [2020-10-27 19:19:24,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:19:24,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 19:19:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-27 19:19:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:24,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:19:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:24,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:24,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:24,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:19:24,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:19:24,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:19:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:19:24,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:19:24,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:19:24,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:24,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:24,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:24,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 19:19:24,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:24,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-27 19:19:24,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:19:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:24,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 19:19:24,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:24,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 19:19:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:24,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:24,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:24,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 19:19:24,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:24,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 284 [2020-10-27 19:19:24,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:19:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:19:24,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-27 19:19:24,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:25,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 329 [2020-10-27 19:19:25,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:25,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:25,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:25,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 19:19:25,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:25,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 19:19:25,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:25,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:19:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-27 19:19:25,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:19:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:19:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:25,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:25,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:19:25,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:25,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 19:19:25,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:19:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:25,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:19:25,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:25,931 INFO L134 CoverageAnalysis]: Checked inductivity of 411 backedges. 91 proven. 251 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 19:19:25,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [325912295] [2020-10-27 19:19:25,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:19:25,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 19:19:25,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385880279] [2020-10-27 19:19:25,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:19:25,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:19:25,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:19:25,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:19:25,934 INFO L87 Difference]: Start difference. First operand 39060 states and 53010 transitions. Second operand 8 states. [2020-10-27 19:19:36,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:19:36,828 INFO L93 Difference]: Finished difference Result 86066 states and 117995 transitions. [2020-10-27 19:19:36,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 19:19:36,830 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 647 [2020-10-27 19:19:36,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:19:36,992 INFO L225 Difference]: With dead ends: 86066 [2020-10-27 19:19:36,992 INFO L226 Difference]: Without dead ends: 47012 [2020-10-27 19:19:37,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-10-27 19:19:37,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47012 states. [2020-10-27 19:19:38,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47012 to 47008. [2020-10-27 19:19:38,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47008 states. [2020-10-27 19:19:38,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47008 states to 47008 states and 62907 transitions. [2020-10-27 19:19:38,155 INFO L78 Accepts]: Start accepts. Automaton has 47008 states and 62907 transitions. Word has length 647 [2020-10-27 19:19:38,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:19:38,156 INFO L481 AbstractCegarLoop]: Abstraction has 47008 states and 62907 transitions. [2020-10-27 19:19:38,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:19:38,156 INFO L276 IsEmpty]: Start isEmpty. Operand 47008 states and 62907 transitions. [2020-10-27 19:19:38,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 690 [2020-10-27 19:19:38,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:19:38,256 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:19:38,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:19:38,257 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:19:38,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:19:38,258 INFO L82 PathProgramCache]: Analyzing trace with hash 551478213, now seen corresponding path program 1 times [2020-10-27 19:19:38,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:19:38,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [920868689] [2020-10-27 19:19:38,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:19:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:38,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:43,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:43,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 707 [2020-10-27 19:19:43,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:19:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-27 19:19:43,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:19:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-27 19:19:43,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-27 19:19:43,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:43,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:19:43,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:43,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:43,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:43,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:19:43,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:43,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 19:19:43,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:19:43,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:43,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:19:43,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:43,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:19:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:43,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:43,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:43,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-27 19:19:43,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:43,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 19:19:43,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:43,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:19:43,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:43,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 19:19:43,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:43,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 19:19:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:43,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:44,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:44,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 19:19:44,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-27 19:19:44,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:19:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:19:44,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-27 19:19:44,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:44,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2020-10-27 19:19:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:44,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:44,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:44,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 19:19:44,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:44,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 19:19:44,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:19:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-27 19:19:44,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:19:44,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:44,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:19:44,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:19:44,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:19:44,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:19:44,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:19:44,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:19:44,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:19:44,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:19:44,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:19:44,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:19:44,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:19:44,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:19:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 495 backedges. 133 proven. 251 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-27 19:19:45,056 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [920868689] [2020-10-27 19:19:45,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:19:45,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:19:45,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034396990] [2020-10-27 19:19:45,058 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:19:45,058 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:19:45,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:19:45,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:19:45,063 INFO L87 Difference]: Start difference. First operand 47008 states and 62907 transitions. Second operand 7 states. [2020-10-27 19:19:58,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:19:58,568 INFO L93 Difference]: Finished difference Result 95633 states and 136618 transitions. [2020-10-27 19:19:58,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:19:58,570 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 689 [2020-10-27 19:19:58,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:19:58,792 INFO L225 Difference]: With dead ends: 95633 [2020-10-27 19:19:58,793 INFO L226 Difference]: Without dead ends: 48631 [2020-10-27 19:19:58,889 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:19:58,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48631 states. [2020-10-27 19:20:00,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48631 to 48103. [2020-10-27 19:20:00,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48103 states. [2020-10-27 19:20:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48103 states to 48103 states and 61836 transitions. [2020-10-27 19:20:00,882 INFO L78 Accepts]: Start accepts. Automaton has 48103 states and 61836 transitions. Word has length 689 [2020-10-27 19:20:00,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:20:00,883 INFO L481 AbstractCegarLoop]: Abstraction has 48103 states and 61836 transitions. [2020-10-27 19:20:00,883 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:20:00,883 INFO L276 IsEmpty]: Start isEmpty. Operand 48103 states and 61836 transitions. [2020-10-27 19:20:01,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 756 [2020-10-27 19:20:01,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:20:01,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:20:01,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:20:01,017 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:20:01,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:20:01,018 INFO L82 PathProgramCache]: Analyzing trace with hash 1050756410, now seen corresponding path program 1 times [2020-10-27 19:20:01,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:20:01,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534898509] [2020-10-27 19:20:01,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:20:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:01,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:01,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:02,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:06,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:06,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 775 [2020-10-27 19:20:06,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:20:06,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-27 19:20:06,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:06,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:20:06,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 107 [2020-10-27 19:20:06,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 19:20:06,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:06,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:20:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:06,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:06,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:06,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:20:06,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:06,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:20:06,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:06,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:06,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:06,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:20:06,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:06,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:06,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:06,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-27 19:20:06,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-27 19:20:06,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:20:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:06,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 19:20:06,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:06,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 19:20:06,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:06,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:08,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:08,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 19:20:08,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:20:08,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2066 [2020-10-27 19:20:08,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:20:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:20:08,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 335 [2020-10-27 19:20:08,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:08,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:20:08,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:08,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:08,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:08,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 19:20:08,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 19:20:08,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:20:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:20:08,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 19:20:08,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:08,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2020-10-27 19:20:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:09,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:09,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:09,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 19:20:09,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:09,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 19:20:09,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:09,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-27 19:20:09,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:09,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:09,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:20:09,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:09,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:09,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:09,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:20:09,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 19:20:09,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:09,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:09,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 119 proven. 309 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-27 19:20:09,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534898509] [2020-10-27 19:20:09,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:20:09,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:20:09,585 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200205133] [2020-10-27 19:20:09,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:20:09,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:20:09,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:20:09,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:20:09,588 INFO L87 Difference]: Start difference. First operand 48103 states and 61836 transitions. Second operand 7 states. [2020-10-27 19:20:25,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:20:25,627 INFO L93 Difference]: Finished difference Result 106776 states and 140852 transitions. [2020-10-27 19:20:25,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:20:25,631 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 755 [2020-10-27 19:20:25,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:20:25,809 INFO L225 Difference]: With dead ends: 106776 [2020-10-27 19:20:25,810 INFO L226 Difference]: Without dead ends: 57143 [2020-10-27 19:20:25,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:20:25,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57143 states. [2020-10-27 19:20:27,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57143 to 57136. [2020-10-27 19:20:27,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57136 states. [2020-10-27 19:20:27,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57136 states to 57136 states and 70510 transitions. [2020-10-27 19:20:27,490 INFO L78 Accepts]: Start accepts. Automaton has 57136 states and 70510 transitions. Word has length 755 [2020-10-27 19:20:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:20:27,490 INFO L481 AbstractCegarLoop]: Abstraction has 57136 states and 70510 transitions. [2020-10-27 19:20:27,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 19:20:27,491 INFO L276 IsEmpty]: Start isEmpty. Operand 57136 states and 70510 transitions. [2020-10-27 19:20:27,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 781 [2020-10-27 19:20:27,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:20:27,562 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 19:20:27,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:20:27,562 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:20:27,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:20:27,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1678916238, now seen corresponding path program 1 times [2020-10-27 19:20:27,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:20:27,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [475769134] [2020-10-27 19:20:27,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:20:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:27,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:28,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:29,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:32,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:32,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 800 [2020-10-27 19:20:32,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 19:20:32,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-27 19:20:32,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:32,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:20:32,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 132 [2020-10-27 19:20:32,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 334 [2020-10-27 19:20:32,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:33,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:20:33,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:33,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:33,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:33,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:20:33,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:33,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:20:33,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:33,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:33,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:33,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:20:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:33,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:33,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:33,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 19:20:33,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:33,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 19:20:33,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:20:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:33,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-27 19:20:33,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:33,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 19:20:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:33,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:33,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:34,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:34,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 335 [2020-10-27 19:20:34,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:20:34,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1406 [2020-10-27 19:20:34,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:20:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:20:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 335 [2020-10-27 19:20:34,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:20:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:34,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:35,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:35,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 19:20:35,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:35,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 19:20:35,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 19:20:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:35,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 19:20:35,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:35,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-27 19:20:35,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:35,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:35,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:35,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 19:20:35,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:35,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 19:20:35,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-27 19:20:35,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:35,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:35,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:20:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:35,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:35,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:35,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:20:35,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:35,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 19:20:35,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:35,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:35,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:36,822 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 144 proven. 309 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-27 19:20:36,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [475769134] [2020-10-27 19:20:36,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:20:36,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 19:20:36,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056494137] [2020-10-27 19:20:36,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 19:20:36,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:20:36,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 19:20:36,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-27 19:20:36,825 INFO L87 Difference]: Start difference. First operand 57136 states and 70510 transitions. Second operand 9 states. [2020-10-27 19:20:40,416 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 73 [2020-10-27 19:20:50,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:20:50,610 INFO L93 Difference]: Finished difference Result 115024 states and 142026 transitions. [2020-10-27 19:20:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 19:20:50,611 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 780 [2020-10-27 19:20:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:20:50,808 INFO L225 Difference]: With dead ends: 115024 [2020-10-27 19:20:50,809 INFO L226 Difference]: Without dead ends: 57898 [2020-10-27 19:20:51,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=83, Invalid=259, Unknown=0, NotChecked=0, Total=342 [2020-10-27 19:20:51,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57898 states. [2020-10-27 19:20:52,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57898 to 57888. [2020-10-27 19:20:52,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57888 states. [2020-10-27 19:20:52,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57888 states to 57888 states and 71363 transitions. [2020-10-27 19:20:52,256 INFO L78 Accepts]: Start accepts. Automaton has 57888 states and 71363 transitions. Word has length 780 [2020-10-27 19:20:52,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:20:52,257 INFO L481 AbstractCegarLoop]: Abstraction has 57888 states and 71363 transitions. [2020-10-27 19:20:52,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 19:20:52,257 INFO L276 IsEmpty]: Start isEmpty. Operand 57888 states and 71363 transitions. [2020-10-27 19:20:52,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2020-10-27 19:20:52,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:20:52,325 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:20:52,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:20:52,325 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:20:52,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:20:52,326 INFO L82 PathProgramCache]: Analyzing trace with hash 21160888, now seen corresponding path program 1 times [2020-10-27 19:20:52,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:20:52,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266482018] [2020-10-27 19:20:52,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:20:52,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:52,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:53,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:57,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:57,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 810 [2020-10-27 19:20:57,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 19:20:57,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 19:20:57,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:20:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-27 19:20:57,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-27 19:20:57,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:57,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:20:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:57,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:57,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:57,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:20:57,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:57,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:20:57,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:57,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:57,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:57,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 19:20:57,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:57,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:57,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:57,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-27 19:20:57,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:57,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 19:20:57,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:57,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:57,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:57,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-27 19:20:57,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:57,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:57,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:57,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 19:20:57,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:57,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 19:20:57,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:20:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:57,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-27 19:20:57,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:57,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-27 19:20:57,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:57,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:57,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:57,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 19:20:57,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:57,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 19:20:57,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:20:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:20:57,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 253 [2020-10-27 19:20:57,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:58,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 19:20:58,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:58,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:58,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-27 19:20:58,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:58,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-27 19:20:58,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:58,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 311 [2020-10-27 19:20:58,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:58,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:58,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 19:20:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:20:58,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:20:58,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:20:58,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 19:20:58,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:20:58,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 19:20:58,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:20:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:20:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:20:58,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:20:58,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:20:58,615 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 247 proven. 251 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-27 19:20:58,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266482018] [2020-10-27 19:20:58,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:20:58,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 19:20:58,615 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575225559] [2020-10-27 19:20:58,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 19:20:58,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:20:58,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 19:20:58,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 19:20:58,617 INFO L87 Difference]: Start difference. First operand 57888 states and 71363 transitions. Second operand 7 states. [2020-10-27 19:21:08,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:21:08,521 INFO L93 Difference]: Finished difference Result 128950 states and 161976 transitions. [2020-10-27 19:21:08,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 19:21:08,523 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 790 [2020-10-27 19:21:08,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:21:08,695 INFO L225 Difference]: With dead ends: 128950 [2020-10-27 19:21:08,695 INFO L226 Difference]: Without dead ends: 71072 [2020-10-27 19:21:08,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 19:21:08,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71072 states.