/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/Problem03_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 15:40:01,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 15:40:01,468 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 15:40:01,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 15:40:01,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 15:40:01,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 15:40:01,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 15:40:01,529 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 15:40:01,547 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 15:40:01,553 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 15:40:01,555 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 15:40:01,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 15:40:01,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 15:40:01,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 15:40:01,563 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 15:40:01,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 15:40:01,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 15:40:01,569 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 15:40:01,576 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 15:40:01,584 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 15:40:01,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 15:40:01,587 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 15:40:01,589 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 15:40:01,591 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 15:40:01,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 15:40:01,600 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 15:40:01,600 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 15:40:01,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 15:40:01,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 15:40:01,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 15:40:01,604 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 15:40:01,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 15:40:01,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 15:40:01,607 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 15:40:01,608 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 15:40:01,609 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 15:40:01,609 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 15:40:01,609 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 15:40:01,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 15:40:01,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 15:40:01,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 15:40:01,619 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 15:40:01,670 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 15:40:01,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 15:40:01,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 15:40:01,671 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 15:40:01,672 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 15:40:01,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 15:40:01,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 15:40:01,674 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 15:40:01,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 15:40:01,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 15:40:01,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 15:40:01,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 15:40:01,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 15:40:01,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 15:40:01,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 15:40:01,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 15:40:01,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 15:40:01,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 15:40:01,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 15:40:01,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 15:40:01,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 15:40:01,678 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 15:40:01,678 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 15:40:01,679 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 15:40:01,679 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 15:40:01,679 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 15:40:01,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 15:40:01,679 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 15:40:01,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 15:40:01,680 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 15:40:02,051 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 15:40:02,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 15:40:02,087 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 15:40:02,091 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 15:40:02,092 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 15:40:02,093 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label10.c [2020-10-27 15:40:02,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a83efee/7cbc570b7fca4134bb3b2beb424acaa9/FLAGf804a5b11 [2020-10-27 15:40:02,986 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 15:40:02,987 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem03_label10.c [2020-10-27 15:40:03,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a83efee/7cbc570b7fca4134bb3b2beb424acaa9/FLAGf804a5b11 [2020-10-27 15:40:03,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/63a83efee/7cbc570b7fca4134bb3b2beb424acaa9 [2020-10-27 15:40:03,168 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 15:40:03,178 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 15:40:03,182 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 15:40:03,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 15:40:03,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 15:40:03,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:40:03" (1/1) ... [2020-10-27 15:40:03,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f04c96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:03, skipping insertion in model container [2020-10-27 15:40:03,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:40:03" (1/1) ... [2020-10-27 15:40:03,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 15:40:03,296 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 15:40:04,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:40:04,075 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 15:40:04,353 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 15:40:04,378 INFO L208 MainTranslator]: Completed translation [2020-10-27 15:40:04,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:04 WrapperNode [2020-10-27 15:40:04,379 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 15:40:04,380 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 15:40:04,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 15:40:04,381 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 15:40:04,395 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:04" (1/1) ... [2020-10-27 15:40:04,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:04" (1/1) ... [2020-10-27 15:40:04,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:04" (1/1) ... [2020-10-27 15:40:04,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:04" (1/1) ... [2020-10-27 15:40:04,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:04" (1/1) ... [2020-10-27 15:40:04,554 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:04" (1/1) ... [2020-10-27 15:40:04,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:04" (1/1) ... [2020-10-27 15:40:04,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 15:40:04,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 15:40:04,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 15:40:04,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 15:40:04,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:04" (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 15:40:04,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 15:40:04,676 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 15:40:04,677 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 15:40:04,677 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 15:40:04,677 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 15:40:04,677 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 15:40:04,677 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 15:40:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 15:40:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 15:40:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 15:40:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 15:40:04,678 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 15:40:04,679 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 15:40:04,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 15:40:04,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 15:40:04,679 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 15:40:04,679 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 15:40:04,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 15:40:04,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 15:40:06,715 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 15:40:06,716 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 15:40:06,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:40:06 BoogieIcfgContainer [2020-10-27 15:40:06,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 15:40:06,724 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 15:40:06,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 15:40:06,728 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 15:40:06,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:40:03" (1/3) ... [2020-10-27 15:40:06,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13448288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:40:06, skipping insertion in model container [2020-10-27 15:40:06,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:40:04" (2/3) ... [2020-10-27 15:40:06,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13448288 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:40:06, skipping insertion in model container [2020-10-27 15:40:06,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:40:06" (3/3) ... [2020-10-27 15:40:06,732 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem03_label10.c [2020-10-27 15:40:06,745 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 15:40:06,751 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 15:40:06,765 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 15:40:06,814 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 15:40:06,814 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 15:40:06,814 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 15:40:06,814 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 15:40:06,814 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 15:40:06,815 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 15:40:06,815 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 15:40:06,815 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 15:40:06,852 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states. [2020-10-27 15:40:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-27 15:40:06,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:06,872 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:06,872 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:06,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:06,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1917621056, now seen corresponding path program 1 times [2020-10-27 15:40:06,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:06,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585787721] [2020-10-27 15:40:06,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:07,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:08,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:11,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:11,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-27 15:40:11,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:40:11,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4095 [2020-10-27 15:40:11,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 15:40:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 15:40:11,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 189 [2020-10-27 15:40:11,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:40:11,960 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:11,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:11,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:11,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:12,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:12,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:12,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:12,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 15:40:12,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:12,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:12,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:40:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:12,200 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 15:40:12,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585787721] [2020-10-27 15:40:12,203 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 15:40:12,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 15:40:12,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69929807] [2020-10-27 15:40:12,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 15:40:12,212 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:12,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 15:40:12,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 15:40:12,234 INFO L87 Difference]: Start difference. First operand 315 states. Second operand 4 states. [2020-10-27 15:40:12,495 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:40:15,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:15,625 INFO L93 Difference]: Finished difference Result 889 states and 1542 transitions. [2020-10-27 15:40:15,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:40:15,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 188 [2020-10-27 15:40:15,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:15,653 INFO L225 Difference]: With dead ends: 889 [2020-10-27 15:40:15,653 INFO L226 Difference]: Without dead ends: 481 [2020-10-27 15:40:15,662 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:40:15,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-27 15:40:15,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 476. [2020-10-27 15:40:15,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 476 states. [2020-10-27 15:40:15,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 476 states to 476 states and 729 transitions. [2020-10-27 15:40:15,760 INFO L78 Accepts]: Start accepts. Automaton has 476 states and 729 transitions. Word has length 188 [2020-10-27 15:40:15,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:15,761 INFO L481 AbstractCegarLoop]: Abstraction has 476 states and 729 transitions. [2020-10-27 15:40:15,761 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 15:40:15,762 INFO L276 IsEmpty]: Start isEmpty. Operand 476 states and 729 transitions. [2020-10-27 15:40:15,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2020-10-27 15:40:15,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:15,770 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:40:15,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 15:40:15,770 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:15,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:15,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1195115023, now seen corresponding path program 1 times [2020-10-27 15:40:15,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:15,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [411527218] [2020-10-27 15:40:15,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:15,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:16,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:18,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:18,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:18,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-27 15:40:18,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:40:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3059 [2020-10-27 15:40:18,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 15:40:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 15:40:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:19,284 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:19,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:19,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:19,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:19,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:19,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:19,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:19,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 15:40:19,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:19,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:19,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:19,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 15:40:19,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:40:19,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:19,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:19,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:19,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:40:19,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:19,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 15:40:19,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:19,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:40:19,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:40:19,610 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:40:19,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [411527218] [2020-10-27 15:40:19,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:40:19,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:40:19,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231368389] [2020-10-27 15:40:19,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:40:19,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:19,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:40:19,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:40:19,619 INFO L87 Difference]: Start difference. First operand 476 states and 729 transitions. Second operand 5 states. [2020-10-27 15:40:19,813 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 15:40:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:22,438 INFO L93 Difference]: Finished difference Result 1388 states and 2159 transitions. [2020-10-27 15:40:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:40:22,439 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 197 [2020-10-27 15:40:22,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:22,449 INFO L225 Difference]: With dead ends: 1388 [2020-10-27 15:40:22,449 INFO L226 Difference]: Without dead ends: 918 [2020-10-27 15:40:22,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:40:22,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 918 states. [2020-10-27 15:40:22,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 918 to 905. [2020-10-27 15:40:22,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 905 states. [2020-10-27 15:40:22,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1363 transitions. [2020-10-27 15:40:22,535 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1363 transitions. Word has length 197 [2020-10-27 15:40:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:22,537 INFO L481 AbstractCegarLoop]: Abstraction has 905 states and 1363 transitions. [2020-10-27 15:40:22,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:40:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1363 transitions. [2020-10-27 15:40:22,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-27 15:40:22,548 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:22,548 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 15:40:22,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 15:40:22,549 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:22,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:22,549 INFO L82 PathProgramCache]: Analyzing trace with hash 427802195, now seen corresponding path program 1 times [2020-10-27 15:40:22,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:22,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278016765] [2020-10-27 15:40:22,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:22,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:23,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:24,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:25,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:25,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-27 15:40:25,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:40:25,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2443 [2020-10-27 15:40:25,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 15:40:25,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 15:40:25,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:25,418 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:25,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:25,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:25,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:25,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:25,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:25,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:25,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:40:25,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:25,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:25,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 15:40:25,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:40:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:25,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:25,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:25,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 15:40:25,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:25,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 15:40:25,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:25,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 15:40:25,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:25,789 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 15:40:25,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278016765] [2020-10-27 15:40:25,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:40:25,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:40:25,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218286320] [2020-10-27 15:40:25,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:40:25,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:25,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:40:25,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:40:25,794 INFO L87 Difference]: Start difference. First operand 905 states and 1363 transitions. Second operand 5 states. [2020-10-27 15:40:26,096 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:40:29,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:29,324 INFO L93 Difference]: Finished difference Result 2647 states and 4055 transitions. [2020-10-27 15:40:29,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:40:29,332 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-27 15:40:29,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:29,349 INFO L225 Difference]: With dead ends: 2647 [2020-10-27 15:40:29,350 INFO L226 Difference]: Without dead ends: 1748 [2020-10-27 15:40:29,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:40:29,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2020-10-27 15:40:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1741. [2020-10-27 15:40:29,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1741 states. [2020-10-27 15:40:29,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1741 states to 1741 states and 2569 transitions. [2020-10-27 15:40:29,456 INFO L78 Accepts]: Start accepts. Automaton has 1741 states and 2569 transitions. Word has length 206 [2020-10-27 15:40:29,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:29,456 INFO L481 AbstractCegarLoop]: Abstraction has 1741 states and 2569 transitions. [2020-10-27 15:40:29,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:40:29,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1741 states and 2569 transitions. [2020-10-27 15:40:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-10-27 15:40:29,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:29,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-27 15:40:29,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 15:40:29,468 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:29,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:29,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1010919856, now seen corresponding path program 1 times [2020-10-27 15:40:29,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:29,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376342327] [2020-10-27 15:40:29,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:29,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:29,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:29,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:31,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:33,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:33,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-27 15:40:33,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:40:33,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3963 [2020-10-27 15:40:33,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 15:40:33,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:40:33,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:33,698 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:33,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:33,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:33,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:33,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:33,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 15:40:33,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:33,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:33,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:33,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:40:33,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:33,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:33,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:33,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:40:33,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 15:40:33,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:33,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 15:40:33,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:33,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 15:40:33,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:33,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:33,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:33,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:40:33,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:33,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 15:40:33,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:33,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:33,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:40:33,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:40:33,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:34,123 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:40:34,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376342327] [2020-10-27 15:40:34,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:40:34,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:40:34,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383315419] [2020-10-27 15:40:34,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:40:34,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:34,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:40:34,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:40:34,126 INFO L87 Difference]: Start difference. First operand 1741 states and 2569 transitions. Second operand 7 states. [2020-10-27 15:40:34,434 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:40:35,361 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:40:38,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:38,109 INFO L93 Difference]: Finished difference Result 5336 states and 8777 transitions. [2020-10-27 15:40:38,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:40:38,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-10-27 15:40:38,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:38,150 INFO L225 Difference]: With dead ends: 5336 [2020-10-27 15:40:38,150 INFO L226 Difference]: Without dead ends: 3601 [2020-10-27 15:40:38,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:40:38,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3601 states. [2020-10-27 15:40:38,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3601 to 3466. [2020-10-27 15:40:38,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3466 states. [2020-10-27 15:40:38,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3466 states to 3466 states and 4988 transitions. [2020-10-27 15:40:38,357 INFO L78 Accepts]: Start accepts. Automaton has 3466 states and 4988 transitions. Word has length 214 [2020-10-27 15:40:38,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:38,357 INFO L481 AbstractCegarLoop]: Abstraction has 3466 states and 4988 transitions. [2020-10-27 15:40:38,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:40:38,358 INFO L276 IsEmpty]: Start isEmpty. Operand 3466 states and 4988 transitions. [2020-10-27 15:40:38,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-10-27 15:40:38,369 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:38,370 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-27 15:40:38,370 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 15:40:38,370 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:38,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1861665380, now seen corresponding path program 1 times [2020-10-27 15:40:38,371 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:38,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789191827] [2020-10-27 15:40:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:38,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:38,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:40,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:41,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:43,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:43,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 234 [2020-10-27 15:40:43,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:40:43,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 15:40:43,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:43,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 15:40:43,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 15:40:43,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:43,780 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:43,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:43,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:43,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:43,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:43,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:43,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:40:43,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:43,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:43,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:43,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:40:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:43,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:43,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:43,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 15:40:43,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:43,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:40:43,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:43,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:43,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:43,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:43,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-10-27 15:40:43,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:43,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:43,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:43,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 15:40:43,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:43,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 15:40:43,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:43,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:40:43,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:44,112 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 15:40:44,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789191827] [2020-10-27 15:40:44,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:40:44,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:40:44,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761765593] [2020-10-27 15:40:44,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:40:44,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:44,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:40:44,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:40:44,115 INFO L87 Difference]: Start difference. First operand 3466 states and 4988 transitions. Second operand 5 states. [2020-10-27 15:40:44,310 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 158 [2020-10-27 15:40:47,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:47,201 INFO L93 Difference]: Finished difference Result 9462 states and 13969 transitions. [2020-10-27 15:40:47,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:40:47,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 220 [2020-10-27 15:40:47,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:47,238 INFO L225 Difference]: With dead ends: 9462 [2020-10-27 15:40:47,238 INFO L226 Difference]: Without dead ends: 6002 [2020-10-27 15:40:47,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:40:47,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2020-10-27 15:40:47,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 5983. [2020-10-27 15:40:47,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5983 states. [2020-10-27 15:40:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5983 states to 5983 states and 8195 transitions. [2020-10-27 15:40:47,474 INFO L78 Accepts]: Start accepts. Automaton has 5983 states and 8195 transitions. Word has length 220 [2020-10-27 15:40:47,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:47,474 INFO L481 AbstractCegarLoop]: Abstraction has 5983 states and 8195 transitions. [2020-10-27 15:40:47,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:40:47,474 INFO L276 IsEmpty]: Start isEmpty. Operand 5983 states and 8195 transitions. [2020-10-27 15:40:47,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2020-10-27 15:40:47,497 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:47,497 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:40:47,498 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 15:40:47,498 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:47,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:47,498 INFO L82 PathProgramCache]: Analyzing trace with hash 1355633295, now seen corresponding path program 1 times [2020-10-27 15:40:47,499 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:47,499 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750485342] [2020-10-27 15:40:47,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:47,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:47,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:49,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:52,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:52,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 246 [2020-10-27 15:40:52,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:40:52,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-27 15:40:52,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:40:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-27 15:40:52,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 15:40:52,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:52,908 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:40:52,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:40:52,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:52,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:52,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:52,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:40:52,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:52,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:40:52,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:52,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:52,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:52,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:40:53,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:53,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:53,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:53,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:40:53,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:53,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:40:53,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:40:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:53,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:40:53,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:53,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:40:53,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:53,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:53,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:40:53,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:40:53,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:40:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 15:40:53,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:40:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:40:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:40:53,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 15:40:53,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:40:53,216 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 15:40:53,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [750485342] [2020-10-27 15:40:53,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:40:53,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:40:53,219 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656083092] [2020-10-27 15:40:53,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:40:53,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:40:53,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:40:53,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:40:53,221 INFO L87 Difference]: Start difference. First operand 5983 states and 8195 transitions. Second operand 5 states. [2020-10-27 15:40:53,545 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:40:56,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:40:56,572 INFO L93 Difference]: Finished difference Result 16382 states and 23083 transitions. [2020-10-27 15:40:56,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:40:56,572 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 232 [2020-10-27 15:40:56,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:40:56,629 INFO L225 Difference]: With dead ends: 16382 [2020-10-27 15:40:56,629 INFO L226 Difference]: Without dead ends: 10405 [2020-10-27 15:40:56,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:40:56,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10405 states. [2020-10-27 15:40:57,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10405 to 10396. [2020-10-27 15:40:57,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10396 states. [2020-10-27 15:40:57,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10396 states to 10396 states and 14153 transitions. [2020-10-27 15:40:57,093 INFO L78 Accepts]: Start accepts. Automaton has 10396 states and 14153 transitions. Word has length 232 [2020-10-27 15:40:57,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:40:57,093 INFO L481 AbstractCegarLoop]: Abstraction has 10396 states and 14153 transitions. [2020-10-27 15:40:57,093 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:40:57,093 INFO L276 IsEmpty]: Start isEmpty. Operand 10396 states and 14153 transitions. [2020-10-27 15:40:57,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-10-27 15:40:57,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:40:57,134 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:40:57,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 15:40:57,134 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:40:57,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:40:57,135 INFO L82 PathProgramCache]: Analyzing trace with hash 596642730, now seen corresponding path program 1 times [2020-10-27 15:40:57,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:40:57,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574577732] [2020-10-27 15:40:57,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:40:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:40:57,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:57,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:57,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:40:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:02,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:02,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:02,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 262 [2020-10-27 15:41:02,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:41:02,304 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5118 [2020-10-27 15:41:02,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:02,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-10-27 15:41:02,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 15:41:02,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:02,518 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:02,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:02,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:02,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:02,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:02,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:02,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:02,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 15:41:02,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:02,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:02,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:02,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:02,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:02,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:02,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:02,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:02,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:41:02,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:02,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:41:02,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:02,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:02,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:02,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:02,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:02,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:41:02,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:02,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:02,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:02,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 15:41:02,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:02,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 15:41:02,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:02,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 15:41:02,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:02,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 15:41:02,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:02,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:02,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:02,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 15:41:02,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 15:41:02,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:02,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:02,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:41:02,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 15:41:02,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:02,954 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 15:41:02,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574577732] [2020-10-27 15:41:02,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:02,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:41:02,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236486727] [2020-10-27 15:41:02,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:41:02,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:02,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:41:02,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:41:02,957 INFO L87 Difference]: Start difference. First operand 10396 states and 14153 transitions. Second operand 7 states. [2020-10-27 15:41:03,256 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:03,534 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:08,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:08,946 INFO L93 Difference]: Finished difference Result 41015 states and 61510 transitions. [2020-10-27 15:41:08,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 15:41:08,947 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-10-27 15:41:08,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:09,136 INFO L225 Difference]: With dead ends: 41015 [2020-10-27 15:41:09,137 INFO L226 Difference]: Without dead ends: 30625 [2020-10-27 15:41:09,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:41:09,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30625 states. [2020-10-27 15:41:10,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30625 to 30608. [2020-10-27 15:41:10,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30608 states. [2020-10-27 15:41:10,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30608 states to 30608 states and 46066 transitions. [2020-10-27 15:41:10,818 INFO L78 Accepts]: Start accepts. Automaton has 30608 states and 46066 transitions. Word has length 246 [2020-10-27 15:41:10,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:10,818 INFO L481 AbstractCegarLoop]: Abstraction has 30608 states and 46066 transitions. [2020-10-27 15:41:10,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:41:10,819 INFO L276 IsEmpty]: Start isEmpty. Operand 30608 states and 46066 transitions. [2020-10-27 15:41:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-27 15:41:11,133 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:11,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:11,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 15:41:11,133 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:11,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:11,134 INFO L82 PathProgramCache]: Analyzing trace with hash -2064816321, now seen corresponding path program 1 times [2020-10-27 15:41:11,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:11,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628151557] [2020-10-27 15:41:11,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:11,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:11,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:11,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:11,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:15,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:16,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:16,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-10-27 15:41:16,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 15:41:16,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 15:41:16,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-27 15:41:16,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-27 15:41:16,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:16,527 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:16,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:16,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:16,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:16,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:16,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:16,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:16,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:41:16,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:16,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:16,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:16,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:16,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:16,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:16,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:16,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:41:16,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:16,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:41:16,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:16,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:16,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:16,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:16,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:16,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:41:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:16,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:16,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:16,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 15:41:16,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:16,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 15:41:16,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:16,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:16,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:16,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 15:41:16,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:16,865 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 15:41:16,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628151557] [2020-10-27 15:41:16,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:16,865 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 15:41:16,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671585467] [2020-10-27 15:41:16,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 15:41:16,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:16,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 15:41:16,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 15:41:16,868 INFO L87 Difference]: Start difference. First operand 30608 states and 46066 transitions. Second operand 5 states. [2020-10-27 15:41:17,156 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:20,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:20,636 INFO L93 Difference]: Finished difference Result 84915 states and 131858 transitions. [2020-10-27 15:41:20,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 15:41:20,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 247 [2020-10-27 15:41:20,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:21,119 INFO L225 Difference]: With dead ends: 84915 [2020-10-27 15:41:21,119 INFO L226 Difference]: Without dead ends: 54313 [2020-10-27 15:41:21,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 15:41:21,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54313 states. [2020-10-27 15:41:23,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54313 to 54243. [2020-10-27 15:41:23,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54243 states. [2020-10-27 15:41:23,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54243 states to 54243 states and 83250 transitions. [2020-10-27 15:41:23,768 INFO L78 Accepts]: Start accepts. Automaton has 54243 states and 83250 transitions. Word has length 247 [2020-10-27 15:41:23,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:23,768 INFO L481 AbstractCegarLoop]: Abstraction has 54243 states and 83250 transitions. [2020-10-27 15:41:23,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 15:41:23,768 INFO L276 IsEmpty]: Start isEmpty. Operand 54243 states and 83250 transitions. [2020-10-27 15:41:23,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2020-10-27 15:41:23,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:23,923 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:41:23,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 15:41:23,923 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:23,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:23,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1256046697, now seen corresponding path program 1 times [2020-10-27 15:41:23,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:23,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [198896680] [2020-10-27 15:41:23,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:24,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:24,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:24,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:24,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:25,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:25,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:26,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:27,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:28,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:28,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:28,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 268 [2020-10-27 15:41:28,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 15:41:28,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 15:41:28,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-27 15:41:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:41:28,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:29,206 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:29,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:29,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:29,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:29,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:29,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:29,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:41:29,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:29,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:29,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:29,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:29,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:29,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:41:29,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:29,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:41:29,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:29,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:29,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:29,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:41:29,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:29,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:29,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:29,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:29,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:41:29,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 15:41:29,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 15:41:29,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 15:41:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 15:41:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:29,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 15:41:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:29,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:29,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:29,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 15:41:29,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:29,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 15:41:29,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:29,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:41:29,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:29,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 15:41:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:29,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:29,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:29,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:41:29,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:29,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 15:41:29,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:29,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:29,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:41:29,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:41:29,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 84 proven. 6 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-27 15:41:29,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [198896680] [2020-10-27 15:41:29,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:29,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:41:29,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858050623] [2020-10-27 15:41:29,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:41:29,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:29,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:41:29,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:41:29,619 INFO L87 Difference]: Start difference. First operand 54243 states and 83250 transitions. Second operand 8 states. [2020-10-27 15:41:29,897 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 15:41:30,199 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:41:30,410 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-27 15:41:34,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:34,531 INFO L93 Difference]: Finished difference Result 108690 states and 172270 transitions. [2020-10-27 15:41:34,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 15:41:34,531 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 250 [2020-10-27 15:41:34,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:34,805 INFO L225 Difference]: With dead ends: 108690 [2020-10-27 15:41:34,806 INFO L226 Difference]: Without dead ends: 54869 [2020-10-27 15:41:35,187 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-10-27 15:41:35,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54869 states. [2020-10-27 15:41:37,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54869 to 54507. [2020-10-27 15:41:37,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54507 states. [2020-10-27 15:41:37,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54507 states to 54507 states and 78652 transitions. [2020-10-27 15:41:37,406 INFO L78 Accepts]: Start accepts. Automaton has 54507 states and 78652 transitions. Word has length 250 [2020-10-27 15:41:37,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:37,407 INFO L481 AbstractCegarLoop]: Abstraction has 54507 states and 78652 transitions. [2020-10-27 15:41:37,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 15:41:37,407 INFO L276 IsEmpty]: Start isEmpty. Operand 54507 states and 78652 transitions. [2020-10-27 15:41:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-10-27 15:41:37,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:37,534 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 15:41:37,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 15:41:37,534 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:37,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:37,536 INFO L82 PathProgramCache]: Analyzing trace with hash 237848608, now seen corresponding path program 1 times [2020-10-27 15:41:37,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:37,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919461048] [2020-10-27 15:41:37,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:37,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:37,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:37,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:39,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:41,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:41,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-27 15:41:41,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 15:41:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3578 [2020-10-27 15:41:41,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-27 15:41:41,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:41:41,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:41,398 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:41,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:41,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:41,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:41,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:41,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:41,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:41:41,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:41,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:41,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:41,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:41,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:41,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:41,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:41,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 15:41:41,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:41,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 15:41:41,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:41,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 15:41:41,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:41,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 15:41:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:41,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:41,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:41,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:41:41,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:41,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 15:41:41,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:41,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:41:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:41:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:41,815 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 93 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 15:41:41,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919461048] [2020-10-27 15:41:41,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:41,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:41:41,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566326625] [2020-10-27 15:41:41,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:41:41,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:41,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:41:41,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:41:41,818 INFO L87 Difference]: Start difference. First operand 54507 states and 78652 transitions. Second operand 7 states. [2020-10-27 15:41:42,178 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:41:43,480 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:41:48,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:41:48,098 INFO L93 Difference]: Finished difference Result 116726 states and 188608 transitions. [2020-10-27 15:41:48,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:41:48,099 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-10-27 15:41:48,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:41:48,411 INFO L225 Difference]: With dead ends: 116726 [2020-10-27 15:41:48,411 INFO L226 Difference]: Without dead ends: 62641 [2020-10-27 15:41:48,488 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 15:41:48,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62641 states. [2020-10-27 15:41:50,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62641 to 60034. [2020-10-27 15:41:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60034 states. [2020-10-27 15:41:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60034 states to 60034 states and 86925 transitions. [2020-10-27 15:41:51,403 INFO L78 Accepts]: Start accepts. Automaton has 60034 states and 86925 transitions. Word has length 273 [2020-10-27 15:41:51,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:41:51,403 INFO L481 AbstractCegarLoop]: Abstraction has 60034 states and 86925 transitions. [2020-10-27 15:41:51,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:41:51,403 INFO L276 IsEmpty]: Start isEmpty. Operand 60034 states and 86925 transitions. [2020-10-27 15:41:51,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-27 15:41:51,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:41:51,531 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 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] [2020-10-27 15:41:51,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 15:41:51,531 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:41:51,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:41:51,532 INFO L82 PathProgramCache]: Analyzing trace with hash -220477763, now seen corresponding path program 1 times [2020-10-27 15:41:51,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:41:51,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1650870141] [2020-10-27 15:41:51,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:41:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:51,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:51,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:52,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:52,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:54,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:55,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:56,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:56,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 298 [2020-10-27 15:41:56,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 15:41:56,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 15:41:56,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-27 15:41:56,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:41:56,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:56,794 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:41:56,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:41:56,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:56,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:56,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:41:56,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:41:56,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:56,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:56,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:56,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:41:56,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:56,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:56,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:56,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:41:56,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:56,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:41:56,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:56,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:56,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:56,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:41:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:56,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:56,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:56,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:41:56,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:56,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 15:41:56,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:56,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:56,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:56,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 15:41:56,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:56,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:56,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:56,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 15:41:56,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:56,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 15:41:56,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:41:56,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:56,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:41:56,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:56,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 15:41:56,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:56,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:57,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:57,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 15:41:57,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:57,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 15:41:57,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:57,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:41:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:41:57,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-27 15:41:57,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:57,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 15:41:57,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:41:57,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:41:57,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:41:57,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:41:57,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:41:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-27 15:41:57,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:41:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:41:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:41:57,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:41:57,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:41:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-27 15:41:57,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1650870141] [2020-10-27 15:41:57,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:41:57,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:41:57,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631819528] [2020-10-27 15:41:57,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:41:57,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:41:57,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:41:57,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:41:57,283 INFO L87 Difference]: Start difference. First operand 60034 states and 86925 transitions. Second operand 7 states. [2020-10-27 15:41:57,649 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:41:59,765 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 163 [2020-10-27 15:42:03,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:42:03,119 INFO L93 Difference]: Finished difference Result 138106 states and 224633 transitions. [2020-10-27 15:42:03,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:42:03,119 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 278 [2020-10-27 15:42:03,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:42:03,772 INFO L225 Difference]: With dead ends: 138106 [2020-10-27 15:42:03,772 INFO L226 Difference]: Without dead ends: 78745 [2020-10-27 15:42:03,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:42:03,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78745 states. [2020-10-27 15:42:06,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78745 to 75792. [2020-10-27 15:42:06,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75792 states. [2020-10-27 15:42:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75792 states to 75792 states and 106627 transitions. [2020-10-27 15:42:07,024 INFO L78 Accepts]: Start accepts. Automaton has 75792 states and 106627 transitions. Word has length 278 [2020-10-27 15:42:07,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:42:07,024 INFO L481 AbstractCegarLoop]: Abstraction has 75792 states and 106627 transitions. [2020-10-27 15:42:07,024 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:42:07,024 INFO L276 IsEmpty]: Start isEmpty. Operand 75792 states and 106627 transitions. [2020-10-27 15:42:07,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-27 15:42:07,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:42:07,180 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:07,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 15:42:07,181 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:42:07,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:42:07,181 INFO L82 PathProgramCache]: Analyzing trace with hash 2141921812, now seen corresponding path program 1 times [2020-10-27 15:42:07,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:42:07,181 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074583111] [2020-10-27 15:42:07,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:42:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:07,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:07,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:07,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:07,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:07,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:07,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:08,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:10,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:11,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:12,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:12,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-27 15:42:12,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 15:42:12,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5041 [2020-10-27 15:42:12,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:12,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:12,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-10-27 15:42:12,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 15:42:12,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:12,501 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:12,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:12,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:12,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:12,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:12,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:12,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:42:12,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:12,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:12,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:12,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:12,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:12,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:12,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:42:12,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:12,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:42:12,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:12,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:12,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:12,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:42:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:12,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:12,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:12,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:42:12,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:12,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 15:42:12,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:12,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:12,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:12,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 15:42:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:12,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:12,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:12,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:42:12,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:12,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 15:42:12,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:12,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:12,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:12,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 15:42:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:12,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:12,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:12,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 15:42:12,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:12,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 15:42:12,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:12,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 15:42:12,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:12,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 15:42:12,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:12,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:12,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:12,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 15:42:12,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:12,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-27 15:42:12,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:12,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:12,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 15:42:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:13,204 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-27 15:42:13,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074583111] [2020-10-27 15:42:13,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:13,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:42:13,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642446184] [2020-10-27 15:42:13,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:42:13,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:13,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:42:13,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:42:13,207 INFO L87 Difference]: Start difference. First operand 75792 states and 106627 transitions. Second operand 7 states. [2020-10-27 15:42:13,915 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:42:14,525 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-27 15:42:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:42:21,279 INFO L93 Difference]: Finished difference Result 182157 states and 311468 transitions. [2020-10-27 15:42:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 15:42:21,280 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-27 15:42:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:42:22,132 INFO L225 Difference]: With dead ends: 182157 [2020-10-27 15:42:22,132 INFO L226 Difference]: Without dead ends: 107044 [2020-10-27 15:42:22,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 15:42:22,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107044 states. [2020-10-27 15:42:26,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107044 to 99236. [2020-10-27 15:42:26,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99236 states. [2020-10-27 15:42:26,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99236 states to 99236 states and 137223 transitions. [2020-10-27 15:42:26,894 INFO L78 Accepts]: Start accepts. Automaton has 99236 states and 137223 transitions. Word has length 303 [2020-10-27 15:42:26,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:42:26,895 INFO L481 AbstractCegarLoop]: Abstraction has 99236 states and 137223 transitions. [2020-10-27 15:42:26,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:42:26,895 INFO L276 IsEmpty]: Start isEmpty. Operand 99236 states and 137223 transitions. [2020-10-27 15:42:27,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-27 15:42:27,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:42:27,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 15:42:27,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 15:42:27,077 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:42:27,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:42:27,077 INFO L82 PathProgramCache]: Analyzing trace with hash 864488613, now seen corresponding path program 1 times [2020-10-27 15:42:27,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:42:27,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1456345865] [2020-10-27 15:42:27,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:42:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:27,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:27,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:27,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:30,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:32,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:32,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-27 15:42:32,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 15:42:32,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-27 15:42:32,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-27 15:42:32,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 15:42:32,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:32,347 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:32,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:32,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:32,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:32,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:32,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:32,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:32,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 15:42:32,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:32,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:32,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:32,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:32,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:32,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:32,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:32,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:32,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:42:32,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:42:32,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:32,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:32,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:32,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:42:32,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:32,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:32,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:32,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 15:42:32,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:32,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 15:42:32,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:32,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 15:42:32,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:32,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 15:42:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:32,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:32,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:32,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 15:42:32,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:32,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 15:42:32,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:32,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:32,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:42:32,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:32,795 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 15:42:32,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1456345865] [2020-10-27 15:42:32,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:32,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 15:42:32,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415303290] [2020-10-27 15:42:32,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 15:42:32,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:32,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 15:42:32,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 15:42:32,797 INFO L87 Difference]: Start difference. First operand 99236 states and 137223 transitions. Second operand 7 states. [2020-10-27 15:42:33,017 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:42:36,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:42:36,860 INFO L93 Difference]: Finished difference Result 183828 states and 253768 transitions. [2020-10-27 15:42:36,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 15:42:36,861 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-27 15:42:36,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:42:37,149 INFO L225 Difference]: With dead ends: 183828 [2020-10-27 15:42:37,150 INFO L226 Difference]: Without dead ends: 85271 [2020-10-27 15:42:37,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-27 15:42:37,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85271 states. [2020-10-27 15:42:39,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85271 to 85207. [2020-10-27 15:42:39,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85207 states. [2020-10-27 15:42:39,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85207 states to 85207 states and 114835 transitions. [2020-10-27 15:42:39,828 INFO L78 Accepts]: Start accepts. Automaton has 85207 states and 114835 transitions. Word has length 303 [2020-10-27 15:42:39,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 15:42:39,828 INFO L481 AbstractCegarLoop]: Abstraction has 85207 states and 114835 transitions. [2020-10-27 15:42:39,829 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 15:42:39,829 INFO L276 IsEmpty]: Start isEmpty. Operand 85207 states and 114835 transitions. [2020-10-27 15:42:39,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-27 15:42:39,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 15:42:39,987 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 15:42:39,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 15:42:39,987 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 15:42:39,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 15:42:39,987 INFO L82 PathProgramCache]: Analyzing trace with hash -233098606, now seen corresponding path program 1 times [2020-10-27 15:42:39,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 15:42:39,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817643643] [2020-10-27 15:42:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 15:42:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:40,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:40,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:40,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:40,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:41,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:41,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:45,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:45,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 337 [2020-10-27 15:42:45,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 15:42:45,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 15:42:45,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 15:42:45,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 15:42:45,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:45,273 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 15:42:45,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 15:42:45,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:45,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:45,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:45,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 15:42:45,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:45,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 15:42:45,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:45,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:45,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:45,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 15:42:45,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:45,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:45,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:45,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-10-27 15:42:45,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:45,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 15:42:45,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:45,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:45,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:45,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2020-10-27 15:42:45,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:45,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:45,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:45,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-27 15:42:45,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:45,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 15:42:45,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:45,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:45,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:45,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 15:42:45,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:45,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:45,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:45,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 15:42:45,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:45,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 15:42:45,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 15:42:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:45,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 15:42:45,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:45,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 15:42:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:45,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:45,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:45,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 15:42:45,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:45,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 15:42:45,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 15:42:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 15:42:45,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 15:42:45,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:45,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 15:42:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 15:42:45,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 15:42:45,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 15:42:45,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-27 15:42:45,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 15:42:45,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 15:42:45,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 15:42:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 15:42:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 15:42:45,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 15:42:45,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 15:42:45,834 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-27 15:42:45,835 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817643643] [2020-10-27 15:42:45,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 15:42:45,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 15:42:45,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659149043] [2020-10-27 15:42:45,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 15:42:45,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 15:42:45,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 15:42:45,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 15:42:45,836 INFO L87 Difference]: Start difference. First operand 85207 states and 114835 transitions. Second operand 8 states. [2020-10-27 15:42:46,163 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:42:46,770 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 15:42:50,655 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 15:43:01,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 15:43:01,637 INFO L93 Difference]: Finished difference Result 376763 states and 578576 transitions. [2020-10-27 15:43:01,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 15:43:01,638 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 317 [2020-10-27 15:43:01,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 15:43:03,934 INFO L225 Difference]: With dead ends: 376763 [2020-10-27 15:43:03,934 INFO L226 Difference]: Without dead ends: 292251 [2020-10-27 15:43:04,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 15:43:04,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292251 states. [2020-10-27 15:43:13,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292251 to 289922. [2020-10-27 15:43:13,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289922 states.