/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label13.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:22:28,578 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:22:28,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:22:28,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:22:28,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:22:28,621 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:22:28,623 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:22:28,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:22:28,627 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:22:28,628 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:22:28,629 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:22:28,631 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:22:28,631 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:22:28,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:22:28,634 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:22:28,635 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:22:28,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:22:28,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:22:28,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:22:28,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:22:28,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:22:28,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:22:28,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:22:28,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:22:28,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:22:28,652 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:22:28,652 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:22:28,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:22:28,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:22:28,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:22:28,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:22:28,656 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:22:28,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:22:28,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:22:28,659 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:22:28,659 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:22:28,660 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:22:28,660 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:22:28,661 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:22:28,662 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:22:28,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:22:28,665 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 23:22:28,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:22:28,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:22:28,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:22:28,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:22:28,694 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:22:28,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:22:28,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:22:28,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:22:28,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:22:28,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:22:28,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:22:28,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:22:28,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:22:28,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:22:28,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:22:28,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:22:28,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:22:28,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:22:28,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:22:28,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:22:28,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:22:28,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:22:28,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:22:28,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:22:28,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:22:28,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:22:28,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:22:28,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:22:28,700 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:22:28,700 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:22:29,095 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:22:29,137 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:22:29,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:22:29,142 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:22:29,143 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:22:29,145 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label13.c [2020-10-26 23:22:29,235 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9117ace2a/0005dd727cdd44e0b60f4aa0e25f7747/FLAG5cc5b9edc [2020-10-26 23:22:30,013 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:22:30,013 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label13.c [2020-10-26 23:22:30,027 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9117ace2a/0005dd727cdd44e0b60f4aa0e25f7747/FLAG5cc5b9edc [2020-10-26 23:22:30,239 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9117ace2a/0005dd727cdd44e0b60f4aa0e25f7747 [2020-10-26 23:22:30,245 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:22:30,253 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:22:30,257 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:22:30,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:22:30,261 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:22:30,262 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:22:30" (1/1) ... [2020-10-26 23:22:30,268 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75df951 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:30, skipping insertion in model container [2020-10-26 23:22:30,268 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:22:30" (1/1) ... [2020-10-26 23:22:30,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:22:30,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:22:30,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:22:30,958 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:22:31,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:22:31,093 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:22:31,094 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:31 WrapperNode [2020-10-26 23:22:31,094 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:22:31,095 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:22:31,096 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:22:31,096 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:22:31,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:31" (1/1) ... [2020-10-26 23:22:31,109 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:31" (1/1) ... [2020-10-26 23:22:31,136 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:31" (1/1) ... [2020-10-26 23:22:31,136 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:31" (1/1) ... [2020-10-26 23:22:31,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:31" (1/1) ... [2020-10-26 23:22:31,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:31" (1/1) ... [2020-10-26 23:22:31,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:31" (1/1) ... [2020-10-26 23:22:31,267 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:22:31,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:22:31,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:22:31,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:22:31,270 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:22:31,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:22:31,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:22:31,383 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:22:31,383 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:22:31,384 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:22:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:22:31,384 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:22:31,385 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:22:31,385 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:22:31,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:22:31,386 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:22:31,386 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:22:31,386 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:22:31,387 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:22:31,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:22:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:22:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:22:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:22:31,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:22:33,143 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:22:33,143 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:22:33,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:22:33 BoogieIcfgContainer [2020-10-26 23:22:33,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:22:33,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:22:33,148 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:22:33,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:22:33,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:22:30" (1/3) ... [2020-10-26 23:22:33,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751c1ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:22:33, skipping insertion in model container [2020-10-26 23:22:33,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:22:31" (2/3) ... [2020-10-26 23:22:33,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@751c1ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:22:33, skipping insertion in model container [2020-10-26 23:22:33,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:22:33" (3/3) ... [2020-10-26 23:22:33,155 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label13.c [2020-10-26 23:22:33,167 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:22:33,172 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:22:33,186 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:22:33,216 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:22:33,216 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:22:33,216 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:22:33,216 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:22:33,216 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:22:33,217 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:22:33,217 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:22:33,217 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:22:33,241 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:22:33,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-26 23:22:33,248 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:33,248 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] [2020-10-26 23:22:33,249 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:33,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:33,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1622453962, now seen corresponding path program 1 times [2020-10-26 23:22:33,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:33,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1412740372] [2020-10-26 23:22:33,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:33,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:33,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:33,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:33,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-26 23:22:33,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:33,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-26 23:22:33,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:33,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-26 23:22:33,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:22:34,196 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-26 23:22:34,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:34,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:34,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:34,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:34,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:34,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:34,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:22:34,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:34,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:34,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:34,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:22:34,255 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1412740372] [2020-10-26 23:22:34,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:22:34,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:22:34,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128011624] [2020-10-26 23:22:34,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:22:34,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:34,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:22:34,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:22:34,280 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:22:34,432 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:22:36,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:36,974 INFO L93 Difference]: Finished difference Result 719 states and 1261 transitions. [2020-10-26 23:22:36,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:22:36,981 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-10-26 23:22:36,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:36,997 INFO L225 Difference]: With dead ends: 719 [2020-10-26 23:22:36,997 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:22:37,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:22:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:22:37,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-26 23:22:37,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-26 23:22:37,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 526 transitions. [2020-10-26 23:22:37,094 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 526 transitions. Word has length 31 [2020-10-26 23:22:37,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:37,095 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 526 transitions. [2020-10-26 23:22:37,095 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:22:37,095 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 526 transitions. [2020-10-26 23:22:37,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-26 23:22:37,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:37,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:37,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:22:37,104 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:37,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:37,105 INFO L82 PathProgramCache]: Analyzing trace with hash 510510257, now seen corresponding path program 1 times [2020-10-26 23:22:37,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:37,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945591690] [2020-10-26 23:22:37,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:37,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:37,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:37,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:38,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:38,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-26 23:22:38,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:38,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1491 [2020-10-26 23:22:38,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:22:38,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:38,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:38,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:38,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:38,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:38,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:38,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:38,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:22:38,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:38,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:38,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:38,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:38,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:38,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:38,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:38,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:38,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:38,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 23:22:38,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:38,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:22:38,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:22:39,142 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945591690] [2020-10-26 23:22:39,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:22:39,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:22:39,143 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171389533] [2020-10-26 23:22:39,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:39,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:39,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:39,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:39,150 INFO L87 Difference]: Start difference. First operand 375 states and 526 transitions. Second operand 7 states. [2020-10-26 23:22:41,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:41,238 INFO L93 Difference]: Finished difference Result 948 states and 1297 transitions. [2020-10-26 23:22:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:22:41,240 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-26 23:22:41,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:41,246 INFO L225 Difference]: With dead ends: 948 [2020-10-26 23:22:41,246 INFO L226 Difference]: Without dead ends: 579 [2020-10-26 23:22:41,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:22:41,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2020-10-26 23:22:41,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 561. [2020-10-26 23:22:41,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 561 states. [2020-10-26 23:22:41,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 727 transitions. [2020-10-26 23:22:41,299 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 727 transitions. Word has length 104 [2020-10-26 23:22:41,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:41,299 INFO L481 AbstractCegarLoop]: Abstraction has 561 states and 727 transitions. [2020-10-26 23:22:41,299 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:41,300 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 727 transitions. [2020-10-26 23:22:41,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-26 23:22:41,303 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:41,303 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:41,304 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:22:41,304 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:41,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:41,304 INFO L82 PathProgramCache]: Analyzing trace with hash 996163193, now seen corresponding path program 1 times [2020-10-26 23:22:41,305 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:41,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668011788] [2020-10-26 23:22:41,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:41,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:41,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:41,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:43,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:43,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-26 23:22:43,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:43,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-10-26 23:22:43,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:43,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:22:43,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:43,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-26 23:22:43,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:43,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:43,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:43,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:43,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:43,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:43,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:22:43,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:43,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:43,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:43,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:43,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:43,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:43,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:43,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:43,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:43,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-26 23:22:43,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:43,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:43,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:43,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:22:43,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:22:43,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668011788] [2020-10-26 23:22:43,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:43,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:22:43,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202851951] [2020-10-26 23:22:43,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:22:43,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:43,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:22:43,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:22:43,896 INFO L87 Difference]: Start difference. First operand 561 states and 727 transitions. Second operand 6 states. [2020-10-26 23:22:46,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:46,011 INFO L93 Difference]: Finished difference Result 950 states and 1293 transitions. [2020-10-26 23:22:46,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 23:22:46,013 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2020-10-26 23:22:46,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:46,025 INFO L225 Difference]: With dead ends: 950 [2020-10-26 23:22:46,025 INFO L226 Difference]: Without dead ends: 947 [2020-10-26 23:22:46,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:22:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-10-26 23:22:46,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 747. [2020-10-26 23:22:46,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 747 states. [2020-10-26 23:22:46,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 747 states to 747 states and 1033 transitions. [2020-10-26 23:22:46,069 INFO L78 Accepts]: Start accepts. Automaton has 747 states and 1033 transitions. Word has length 140 [2020-10-26 23:22:46,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:46,070 INFO L481 AbstractCegarLoop]: Abstraction has 747 states and 1033 transitions. [2020-10-26 23:22:46,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:22:46,071 INFO L276 IsEmpty]: Start isEmpty. Operand 747 states and 1033 transitions. [2020-10-26 23:22:46,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-26 23:22:46,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:46,077 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:22:46,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:22:46,078 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:46,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:46,079 INFO L82 PathProgramCache]: Analyzing trace with hash 928105436, now seen corresponding path program 1 times [2020-10-26 23:22:46,079 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:46,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [483746959] [2020-10-26 23:22:46,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:46,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:46,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:46,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:46,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:47,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:47,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-26 23:22:47,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:47,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1028 [2020-10-26 23:22:47,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:22:47,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:22:47,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:47,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:47,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:47,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:47,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:47,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:47,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:47,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:22:47,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:47,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:47,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:47,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:47,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:47,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:47,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:22:47,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:47,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 23:22:47,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:47,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:47,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:47,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:22:47,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:47,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:22:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:47,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:47,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:47,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:47,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:47,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:47,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-26 23:22:47,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:47,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:47,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:22:47,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:47,838 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:22:47,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [483746959] [2020-10-26 23:22:47,838 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:47,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:22:47,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516697386] [2020-10-26 23:22:47,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:22:47,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:47,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:22:47,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:22:47,851 INFO L87 Difference]: Start difference. First operand 747 states and 1033 transitions. Second operand 6 states. [2020-10-26 23:22:49,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:49,751 INFO L93 Difference]: Finished difference Result 1226 states and 1766 transitions. [2020-10-26 23:22:49,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:22:49,752 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 188 [2020-10-26 23:22:49,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:49,756 INFO L225 Difference]: With dead ends: 1226 [2020-10-26 23:22:49,757 INFO L226 Difference]: Without dead ends: 599 [2020-10-26 23:22:49,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:22:49,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 599 states. [2020-10-26 23:22:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 599 to 559. [2020-10-26 23:22:49,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 559 states. [2020-10-26 23:22:49,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 679 transitions. [2020-10-26 23:22:49,781 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 679 transitions. Word has length 188 [2020-10-26 23:22:49,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:49,782 INFO L481 AbstractCegarLoop]: Abstraction has 559 states and 679 transitions. [2020-10-26 23:22:49,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:22:49,782 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 679 transitions. [2020-10-26 23:22:49,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2020-10-26 23:22:49,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:49,786 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:22:49,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:22:49,786 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:49,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:49,787 INFO L82 PathProgramCache]: Analyzing trace with hash -83055922, now seen corresponding path program 1 times [2020-10-26 23:22:49,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:49,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637845283] [2020-10-26 23:22:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:49,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:49,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:49,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-26 23:22:54,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4231 [2020-10-26 23:22:54,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:22:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:22:54,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:22:54,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:54,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:54,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:54,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:22:54,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:22:54,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:54,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:54,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:54,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:54,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:54,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 23:22:54,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:54,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:22:54,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:54,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:22:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:54,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:22:54,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:54,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:22:54,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-26 23:22:54,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:54,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:22:54,633 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 46 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:22:54,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637845283] [2020-10-26 23:22:54,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:54,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:54,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113081346] [2020-10-26 23:22:54,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:54,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:54,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:54,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:54,636 INFO L87 Difference]: Start difference. First operand 559 states and 679 transitions. Second operand 7 states. [2020-10-26 23:22:56,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:56,474 INFO L93 Difference]: Finished difference Result 1504 states and 1894 transitions. [2020-10-26 23:22:56,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:22:56,475 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2020-10-26 23:22:56,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:56,481 INFO L225 Difference]: With dead ends: 1504 [2020-10-26 23:22:56,481 INFO L226 Difference]: Without dead ends: 1133 [2020-10-26 23:22:56,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:22:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1133 states. [2020-10-26 23:22:56,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1133 to 935. [2020-10-26 23:22:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 935 states. [2020-10-26 23:22:56,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 935 states to 935 states and 1099 transitions. [2020-10-26 23:22:56,532 INFO L78 Accepts]: Start accepts. Automaton has 935 states and 1099 transitions. Word has length 213 [2020-10-26 23:22:56,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:56,532 INFO L481 AbstractCegarLoop]: Abstraction has 935 states and 1099 transitions. [2020-10-26 23:22:56,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:56,533 INFO L276 IsEmpty]: Start isEmpty. Operand 935 states and 1099 transitions. [2020-10-26 23:22:56,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-10-26 23:22:56,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:56,538 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:22:56,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:22:56,539 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:56,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:56,540 INFO L82 PathProgramCache]: Analyzing trace with hash 2122787787, now seen corresponding path program 1 times [2020-10-26 23:22:56,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:56,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1204999212] [2020-10-26 23:22:56,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:56,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:56,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:56,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:57,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:57,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:58,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:01,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:01,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 349 [2020-10-26 23:23:01,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:23:01,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4910 [2020-10-26 23:23:01,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:23:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:23:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 312 [2020-10-26 23:23:01,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:01,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:01,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:01,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:01,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:01,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:01,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:01,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:23:01,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:01,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:01,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:23:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:23:01,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:01,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:01,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:01,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:01,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:01,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:01,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-26 23:23:01,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:01,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:01,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:01,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:23:01,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:02,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:02,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:02,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:02,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:02,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:02,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:02,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-26 23:23:02,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:02,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:23:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:02,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:02,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:02,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:02,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:23:02,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:02,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 23:23:02,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:02,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:23:02,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:03,069 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 251 proven. 4 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-26 23:23:03,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1204999212] [2020-10-26 23:23:03,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:03,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:03,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735244384] [2020-10-26 23:23:03,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:23:03,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:03,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:23:03,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:23:03,072 INFO L87 Difference]: Start difference. First operand 935 states and 1099 transitions. Second operand 8 states. [2020-10-26 23:23:05,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:05,155 INFO L93 Difference]: Finished difference Result 1904 states and 2395 transitions. [2020-10-26 23:23:05,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:23:05,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 333 [2020-10-26 23:23:05,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:05,163 INFO L225 Difference]: With dead ends: 1904 [2020-10-26 23:23:05,164 INFO L226 Difference]: Without dead ends: 1341 [2020-10-26 23:23:05,166 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:23:05,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2020-10-26 23:23:05,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 1311. [2020-10-26 23:23:05,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-26 23:23:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1474 transitions. [2020-10-26 23:23:05,213 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1474 transitions. Word has length 333 [2020-10-26 23:23:05,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:05,214 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1474 transitions. [2020-10-26 23:23:05,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:23:05,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1474 transitions. [2020-10-26 23:23:05,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 620 [2020-10-26 23:23:05,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:05,229 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2020-10-26 23:23:05,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:23:05,230 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:05,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:05,230 INFO L82 PathProgramCache]: Analyzing trace with hash 1964835055, now seen corresponding path program 1 times [2020-10-26 23:23:05,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:05,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [535786916] [2020-10-26 23:23:05,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:05,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:05,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:06,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:06,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:10,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:10,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 639 [2020-10-26 23:23:10,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:23:10,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 23:23:10,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:23:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:23:10,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 294 [2020-10-26 23:23:10,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:10,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:10,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:10,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:10,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:10,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:10,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:10,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:23:10,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:10,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:10,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:10,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:10,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:10,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:10,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:10,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:10,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:23:10,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:10,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:10,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:10,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:10,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:10,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:10,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:10,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:10,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:10,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:23:10,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:10,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:10,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:23:10,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:10,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:10,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:10,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:11,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:11,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:11,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-26 23:23:11,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:11,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:11,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:23:11,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:11,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:23:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:11,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:11,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:23:11,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 290 [2020-10-26 23:23:11,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:11,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:23:11,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:11,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-10-26 23:23:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:11,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:11,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:11,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:23:11,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:11,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:23:11,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:11,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:23:11,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:11,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:12,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1092 backedges. 560 proven. 158 refuted. 0 times theorem prover too weak. 374 trivial. 0 not checked. [2020-10-26 23:23:12,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [535786916] [2020-10-26 23:23:12,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:12,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:12,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043614359] [2020-10-26 23:23:12,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:12,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:12,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:12,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:12,178 INFO L87 Difference]: Start difference. First operand 1311 states and 1474 transitions. Second operand 7 states. [2020-10-26 23:23:14,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:14,174 INFO L93 Difference]: Finished difference Result 3208 states and 3758 transitions. [2020-10-26 23:23:14,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:14,176 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 619 [2020-10-26 23:23:14,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:14,194 INFO L225 Difference]: With dead ends: 3208 [2020-10-26 23:23:14,195 INFO L226 Difference]: Without dead ends: 2269 [2020-10-26 23:23:14,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:14,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2269 states. [2020-10-26 23:23:14,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2269 to 2069. [2020-10-26 23:23:14,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2069 states. [2020-10-26 23:23:14,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2069 states to 2069 states and 2338 transitions. [2020-10-26 23:23:14,265 INFO L78 Accepts]: Start accepts. Automaton has 2069 states and 2338 transitions. Word has length 619 [2020-10-26 23:23:14,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:14,266 INFO L481 AbstractCegarLoop]: Abstraction has 2069 states and 2338 transitions. [2020-10-26 23:23:14,266 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:14,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2069 states and 2338 transitions. [2020-10-26 23:23:14,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 643 [2020-10-26 23:23:14,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:14,286 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:23:14,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:23:14,286 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:14,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:14,286 INFO L82 PathProgramCache]: Analyzing trace with hash 948726105, now seen corresponding path program 1 times [2020-10-26 23:23:14,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:14,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822772714] [2020-10-26 23:23:14,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:14,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:14,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:14,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:18,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:18,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 662 [2020-10-26 23:23:19,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:23:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-26 23:23:19,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:23:19,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:23:19,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:19,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:19,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:23:19,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:19,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:19,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:23:19,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:19,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:19,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:19,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:19,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:19,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:19,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-26 23:23:19,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:19,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:23:19,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:19,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:19,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:20,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:20,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:23:20,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:20,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-26 23:23:20,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:20,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:23:20,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:20,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-10-26 23:23:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:20,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:20,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:20,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:23:20,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:20,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:23:20,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:23:20,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:20,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:20,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-26 23:23:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:20,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:20,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:20,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:23:20,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:20,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:23:20,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:20,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:23:20,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:20,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:20,554 INFO L134 CoverageAnalysis]: Checked inductivity of 1115 backedges. 349 proven. 209 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2020-10-26 23:23:20,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822772714] [2020-10-26 23:23:20,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:20,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:20,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322197860] [2020-10-26 23:23:20,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:20,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:20,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:20,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:20,557 INFO L87 Difference]: Start difference. First operand 2069 states and 2338 transitions. Second operand 7 states. [2020-10-26 23:23:22,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:22,482 INFO L93 Difference]: Finished difference Result 4336 states and 4961 transitions. [2020-10-26 23:23:22,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:23:22,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 642 [2020-10-26 23:23:22,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:22,496 INFO L225 Difference]: With dead ends: 4336 [2020-10-26 23:23:22,496 INFO L226 Difference]: Without dead ends: 2639 [2020-10-26 23:23:22,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:23:22,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2020-10-26 23:23:22,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2629. [2020-10-26 23:23:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2629 states. [2020-10-26 23:23:22,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2629 states to 2629 states and 2943 transitions. [2020-10-26 23:23:22,570 INFO L78 Accepts]: Start accepts. Automaton has 2629 states and 2943 transitions. Word has length 642 [2020-10-26 23:23:22,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:22,571 INFO L481 AbstractCegarLoop]: Abstraction has 2629 states and 2943 transitions. [2020-10-26 23:23:22,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:22,571 INFO L276 IsEmpty]: Start isEmpty. Operand 2629 states and 2943 transitions. [2020-10-26 23:23:22,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2020-10-26 23:23:22,579 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:22,580 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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] [2020-10-26 23:23:22,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:23:22,580 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:22,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:22,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1061875134, now seen corresponding path program 2 times [2020-10-26 23:23:22,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:22,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1212318284] [2020-10-26 23:23:22,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:22,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:22,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:22,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:22,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:24,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:24,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:27,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:27,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 774 [2020-10-26 23:23:27,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:23:27,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-26 23:23:27,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:23:27,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:23:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-26 23:23:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:27,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:27,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:27,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:27,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:27,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:27,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:23:27,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:27,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:27,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:27,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:27,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:27,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:27,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:27,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:27,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:27,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:27,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:23:27,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:27,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:27,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:27,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:27,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:27,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:27,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:27,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:27,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:27,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:23:27,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:27,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:27,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:23:27,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:28,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:28,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:28,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:28,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:28,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:23:28,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:23:28,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:28,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:23:28,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:28,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:23:28,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:28,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:28,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:23:28,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:28,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 23:23:28,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:28,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:23:28,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:28,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-26 23:23:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:28,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:28,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:23:28,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:28,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:23:28,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:28,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:28,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:23:28,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:28,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:28,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 649 [2020-10-26 23:23:28,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:28,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:28,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:28,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:23:28,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:23:28,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:23:28,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:28,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:29,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1657 backedges. 595 proven. 393 refuted. 0 times theorem prover too weak. 669 trivial. 0 not checked. [2020-10-26 23:23:29,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1212318284] [2020-10-26 23:23:29,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:29,131 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:29,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45314593] [2020-10-26 23:23:29,133 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:29,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:29,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:29,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:29,134 INFO L87 Difference]: Start difference. First operand 2629 states and 2943 transitions. Second operand 7 states. [2020-10-26 23:23:31,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:31,062 INFO L93 Difference]: Finished difference Result 5272 states and 5937 transitions. [2020-10-26 23:23:31,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:31,063 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 752 [2020-10-26 23:23:31,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:31,077 INFO L225 Difference]: With dead ends: 5272 [2020-10-26 23:23:31,077 INFO L226 Difference]: Without dead ends: 3015 [2020-10-26 23:23:31,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:31,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3015 states. [2020-10-26 23:23:31,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3015 to 2999. [2020-10-26 23:23:31,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2999 states. [2020-10-26 23:23:31,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2999 states to 2999 states and 3324 transitions. [2020-10-26 23:23:31,163 INFO L78 Accepts]: Start accepts. Automaton has 2999 states and 3324 transitions. Word has length 752 [2020-10-26 23:23:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:31,165 INFO L481 AbstractCegarLoop]: Abstraction has 2999 states and 3324 transitions. [2020-10-26 23:23:31,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2999 states and 3324 transitions. [2020-10-26 23:23:31,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2020-10-26 23:23:31,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:31,175 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:31,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:23:31,175 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:31,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:31,177 INFO L82 PathProgramCache]: Analyzing trace with hash 929902606, now seen corresponding path program 1 times [2020-10-26 23:23:31,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:31,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732745317] [2020-10-26 23:23:31,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:31,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:31,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:31,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:31,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:32,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 800 [2020-10-26 23:23:36,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:23:36,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-26 23:23:36,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:23:36,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:23:36,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:36,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:23:36,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:36,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:36,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:36,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:23:36,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:36,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:36,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:36,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:36,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-26 23:23:36,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:36,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:23:36,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:36,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:23:36,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:36,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:23:36,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:23:36,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:36,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:36,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:36,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:36,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:23:36,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:36,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 23:23:36,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:36,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:36,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 496 [2020-10-26 23:23:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:36,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:37,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:37,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:23:37,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:37,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:23:37,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:23:37,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:37,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:37,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 675 [2020-10-26 23:23:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:37,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:37,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:37,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:23:37,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:37,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:23:37,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:37,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:23:37,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:37,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:37,422 INFO L134 CoverageAnalysis]: Checked inductivity of 1683 backedges. 380 proven. 293 refuted. 0 times theorem prover too weak. 1010 trivial. 0 not checked. [2020-10-26 23:23:37,422 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732745317] [2020-10-26 23:23:37,423 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:37,423 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:37,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69300762] [2020-10-26 23:23:37,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:37,424 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:37,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:37,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:37,424 INFO L87 Difference]: Start difference. First operand 2999 states and 3324 transitions. Second operand 7 states. [2020-10-26 23:23:40,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:40,401 INFO L93 Difference]: Finished difference Result 6754 states and 7604 transitions. [2020-10-26 23:23:40,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:40,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 778 [2020-10-26 23:23:40,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:40,422 INFO L225 Difference]: With dead ends: 6754 [2020-10-26 23:23:40,422 INFO L226 Difference]: Without dead ends: 4127 [2020-10-26 23:23:40,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:40,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4127 states. [2020-10-26 23:23:40,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4127 to 4115. [2020-10-26 23:23:40,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4115 states. [2020-10-26 23:23:40,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4115 states to 4115 states and 4612 transitions. [2020-10-26 23:23:40,580 INFO L78 Accepts]: Start accepts. Automaton has 4115 states and 4612 transitions. Word has length 778 [2020-10-26 23:23:40,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:40,581 INFO L481 AbstractCegarLoop]: Abstraction has 4115 states and 4612 transitions. [2020-10-26 23:23:40,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:40,581 INFO L276 IsEmpty]: Start isEmpty. Operand 4115 states and 4612 transitions. [2020-10-26 23:23:40,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 786 [2020-10-26 23:23:40,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:40,591 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:40,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:23:40,592 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:40,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:40,592 INFO L82 PathProgramCache]: Analyzing trace with hash 758478916, now seen corresponding path program 1 times [2020-10-26 23:23:40,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:40,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157792612] [2020-10-26 23:23:40,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:40,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:41,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:44,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:45,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:45,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 807 [2020-10-26 23:23:45,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:23:45,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 23:23:45,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:45,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:23:45,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:23:45,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:45,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:45,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:45,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:45,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:45,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:45,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:23:45,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:45,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:45,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:45,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:45,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:45,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:45,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:45,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:45,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:23:45,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:45,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:45,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:45,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:45,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:46,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:23:46,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:46,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:46,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:46,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:46,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:23:46,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:46,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:46,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:46,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:23:46,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:46,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:23:46,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:23:46,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:23:46,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-26 23:23:46,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:46,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:46,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:23:46,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-26 23:23:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:46,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:46,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:46,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:23:46,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:46,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:23:46,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:23:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:46,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:46,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1697 backedges. 652 proven. 79 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2020-10-26 23:23:46,943 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157792612] [2020-10-26 23:23:46,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:46,944 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:46,944 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363148666] [2020-10-26 23:23:46,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:46,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:46,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:46,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:46,946 INFO L87 Difference]: Start difference. First operand 4115 states and 4612 transitions. Second operand 7 states. [2020-10-26 23:23:49,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:49,143 INFO L93 Difference]: Finished difference Result 9343 states and 10654 transitions. [2020-10-26 23:23:49,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:23:49,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 785 [2020-10-26 23:23:49,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:49,170 INFO L225 Difference]: With dead ends: 9343 [2020-10-26 23:23:49,170 INFO L226 Difference]: Without dead ends: 5600 [2020-10-26 23:23:49,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:49,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5600 states. [2020-10-26 23:23:49,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5600 to 5403. [2020-10-26 23:23:49,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5403 states. [2020-10-26 23:23:49,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5403 states to 5403 states and 6129 transitions. [2020-10-26 23:23:49,313 INFO L78 Accepts]: Start accepts. Automaton has 5403 states and 6129 transitions. Word has length 785 [2020-10-26 23:23:49,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:49,314 INFO L481 AbstractCegarLoop]: Abstraction has 5403 states and 6129 transitions. [2020-10-26 23:23:49,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:49,314 INFO L276 IsEmpty]: Start isEmpty. Operand 5403 states and 6129 transitions. [2020-10-26 23:23:49,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2020-10-26 23:23:49,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:49,327 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:49,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:23:49,327 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:49,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:49,328 INFO L82 PathProgramCache]: Analyzing trace with hash -957791809, now seen corresponding path program 1 times [2020-10-26 23:23:49,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:49,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019555140] [2020-10-26 23:23:49,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:49,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:49,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:50,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 885 [2020-10-26 23:23:54,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:23:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-26 23:23:54,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:23:54,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:23:54,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:23:54,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:23:54,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:23:54,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:23:54,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:23:54,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:23:54,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:23:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:23:54,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:23:54,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:23:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:54,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:54,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:23:54,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:54,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:23:54,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:54,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:54,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:54,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:23:54,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:54,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:55,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:55,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:23:55,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:23:55,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:23:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:23:55,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:23:55,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:55,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:23:55,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:55,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:55,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:55,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:23:55,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:55,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-26 23:23:55,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:55,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:23:55,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:23:55,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 23:23:55,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:55,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-26 23:23:55,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:55,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:55,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:55,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:23:55,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:55,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:23:55,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:55,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:55,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:23:55,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:55,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:55,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 758 [2020-10-26 23:23:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:55,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:55,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:23:55,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:23:55,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:23:55,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:23:55,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:23:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:23:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:23:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:23:55,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:23:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 2176 backedges. 500 proven. 148 refuted. 0 times theorem prover too weak. 1528 trivial. 0 not checked. [2020-10-26 23:23:55,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1019555140] [2020-10-26 23:23:55,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:23:55,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:23:55,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815265479] [2020-10-26 23:23:55,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:23:55,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:23:55,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:23:55,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:23:55,730 INFO L87 Difference]: Start difference. First operand 5403 states and 6129 transitions. Second operand 7 states. [2020-10-26 23:23:57,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:57,671 INFO L93 Difference]: Finished difference Result 11920 states and 13704 transitions. [2020-10-26 23:23:57,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:23:57,672 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 861 [2020-10-26 23:23:57,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:57,713 INFO L225 Difference]: With dead ends: 11920 [2020-10-26 23:23:57,714 INFO L226 Difference]: Without dead ends: 6889 [2020-10-26 23:23:57,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:23:57,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6889 states. [2020-10-26 23:23:57,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6889 to 6337. [2020-10-26 23:23:57,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6337 states. [2020-10-26 23:23:57,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6337 states to 6337 states and 7232 transitions. [2020-10-26 23:23:57,890 INFO L78 Accepts]: Start accepts. Automaton has 6337 states and 7232 transitions. Word has length 861 [2020-10-26 23:23:57,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:57,891 INFO L481 AbstractCegarLoop]: Abstraction has 6337 states and 7232 transitions. [2020-10-26 23:23:57,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:23:57,891 INFO L276 IsEmpty]: Start isEmpty. Operand 6337 states and 7232 transitions. [2020-10-26 23:23:57,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 883 [2020-10-26 23:23:57,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:57,906 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:23:57,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:23:57,907 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:57,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:57,907 INFO L82 PathProgramCache]: Analyzing trace with hash 815401357, now seen corresponding path program 1 times [2020-10-26 23:23:57,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:57,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791364898] [2020-10-26 23:23:57,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:58,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:58,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:58,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:00,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:03,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:03,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 906 [2020-10-26 23:24:03,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:24:03,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5100 [2020-10-26 23:24:03,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:03,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:24:03,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-26 23:24:03,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-26 23:24:03,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:03,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:03,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:03,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:03,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:03,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:03,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:03,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:03,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:03,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:03,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:03,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:03,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:03,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:03,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:03,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:03,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:24:03,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:03,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:03,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:03,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:03,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:03,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:03,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:03,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:03,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:03,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:24:03,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:03,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:03,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:03,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:03,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:03,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:03,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:03,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:03,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:24:03,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:03,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:24:03,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:03,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:03,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:03,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:04,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:04,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:04,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:04,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:04,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-26 23:24:04,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:24:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-26 23:24:04,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:04,941 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2020-10-26 23:24:05,127 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 55 [2020-10-26 23:24:05,316 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-26 23:24:05,527 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 56 [2020-10-26 23:24:05,765 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-26 23:24:06,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-26 23:24:06,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:06,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:06,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:06,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:06,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:24:06,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-26 23:24:06,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:06,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:06,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-26 23:24:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:06,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:06,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:06,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:06,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 23:24:06,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:24:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:06,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:06,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 776 [2020-10-26 23:24:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:06,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:06,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:06,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:24:06,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:06,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:24:06,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:06,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:24:06,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:06,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 2209 backedges. 534 proven. 329 refuted. 0 times theorem prover too weak. 1346 trivial. 0 not checked. [2020-10-26 23:24:08,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791364898] [2020-10-26 23:24:08,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:08,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:24:08,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691832614] [2020-10-26 23:24:08,458 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:24:08,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:08,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:24:08,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:24:08,465 INFO L87 Difference]: Start difference. First operand 6337 states and 7232 transitions. Second operand 13 states. [2020-10-26 23:24:09,271 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 92 [2020-10-26 23:24:09,733 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 73 [2020-10-26 23:24:10,278 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 96 [2020-10-26 23:24:10,664 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2020-10-26 23:24:10,963 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 97 [2020-10-26 23:24:11,286 WARN L193 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 101 [2020-10-26 23:24:11,630 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 115 [2020-10-26 23:24:11,943 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2020-10-26 23:24:12,191 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-10-26 23:24:12,982 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 89 [2020-10-26 23:24:13,803 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 93 [2020-10-26 23:24:14,270 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 94 [2020-10-26 23:24:14,627 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 93 [2020-10-26 23:24:15,079 WARN L193 SmtUtils]: Spent 323.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 97 [2020-10-26 23:24:15,488 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 100 [2020-10-26 23:24:16,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:16,072 INFO L93 Difference]: Finished difference Result 13216 states and 15083 transitions. [2020-10-26 23:24:16,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:24:16,073 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 882 [2020-10-26 23:24:16,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:16,093 INFO L225 Difference]: With dead ends: 13216 [2020-10-26 23:24:16,093 INFO L226 Difference]: Without dead ends: 7126 [2020-10-26 23:24:16,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=253, Invalid=617, Unknown=0, NotChecked=0, Total=870 [2020-10-26 23:24:16,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7126 states. [2020-10-26 23:24:16,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7126 to 6814. [2020-10-26 23:24:16,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6814 states. [2020-10-26 23:24:16,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6814 states to 6814 states and 7724 transitions. [2020-10-26 23:24:16,255 INFO L78 Accepts]: Start accepts. Automaton has 6814 states and 7724 transitions. Word has length 882 [2020-10-26 23:24:16,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:16,256 INFO L481 AbstractCegarLoop]: Abstraction has 6814 states and 7724 transitions. [2020-10-26 23:24:16,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:24:16,256 INFO L276 IsEmpty]: Start isEmpty. Operand 6814 states and 7724 transitions. [2020-10-26 23:24:16,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 922 [2020-10-26 23:24:16,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:16,271 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-26 23:24:16,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:24:16,272 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:16,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:16,272 INFO L82 PathProgramCache]: Analyzing trace with hash -1537671077, now seen corresponding path program 1 times [2020-10-26 23:24:16,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:16,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799558736] [2020-10-26 23:24:16,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:16,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:16,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:16,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:16,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:18,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:20,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:21,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:21,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 945 [2020-10-26 23:24:21,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:24:21,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-26 23:24:21,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:24:21,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:24:21,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:21,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:21,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:21,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:21,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:21,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:21,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:24:21,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:21,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:21,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:21,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:21,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:21,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:21,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:21,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:21,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:21,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:21,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:21,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-26 23:24:21,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:21,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:21,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:21,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:21,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:21,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:21,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:21,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:21,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 23:24:21,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:21,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:21,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:21,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:21,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:21,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:21,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:21,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:21,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:21,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:21,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:24:21,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:21,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:21,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:21,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:21,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:24:22,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:24:22,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:24:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:24:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:22,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:24:22,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-26 23:24:22,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:22,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:24:22,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 636 [2020-10-26 23:24:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:22,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:24:22,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:24:22,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:22,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 815 [2020-10-26 23:24:22,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:22,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:22,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:22,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:24:22,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:22,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:24:22,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:22,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:22,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:24:22,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:22,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:22,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2420 backedges. 665 proven. 212 refuted. 0 times theorem prover too weak. 1543 trivial. 0 not checked. [2020-10-26 23:24:22,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799558736] [2020-10-26 23:24:22,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:22,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:22,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877902898] [2020-10-26 23:24:22,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:22,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:22,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:22,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:22,948 INFO L87 Difference]: Start difference. First operand 6814 states and 7724 transitions. Second operand 7 states. [2020-10-26 23:24:25,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:25,770 INFO L93 Difference]: Finished difference Result 13626 states and 15479 transitions. [2020-10-26 23:24:25,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:24:25,771 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 921 [2020-10-26 23:24:25,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:25,790 INFO L225 Difference]: With dead ends: 13626 [2020-10-26 23:24:25,790 INFO L226 Difference]: Without dead ends: 7184 [2020-10-26 23:24:25,805 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:24:25,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7184 states. [2020-10-26 23:24:26,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7184 to 7180. [2020-10-26 23:24:26,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7180 states. [2020-10-26 23:24:26,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7180 states to 7180 states and 8102 transitions. [2020-10-26 23:24:26,034 INFO L78 Accepts]: Start accepts. Automaton has 7180 states and 8102 transitions. Word has length 921 [2020-10-26 23:24:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:26,035 INFO L481 AbstractCegarLoop]: Abstraction has 7180 states and 8102 transitions. [2020-10-26 23:24:26,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:26,035 INFO L276 IsEmpty]: Start isEmpty. Operand 7180 states and 8102 transitions. [2020-10-26 23:24:26,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 951 [2020-10-26 23:24:26,050 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:26,051 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:26,051 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:24:26,051 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:26,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:26,052 INFO L82 PathProgramCache]: Analyzing trace with hash 772436437, now seen corresponding path program 1 times [2020-10-26 23:24:26,052 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:26,052 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [954531154] [2020-10-26 23:24:26,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:26,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:26,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:26,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:28,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:28,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:31,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:31,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 974 [2020-10-26 23:24:31,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:24:31,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-26 23:24:31,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:31,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:24:31,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-26 23:24:31,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:31,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:31,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:31,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:31,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:31,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 23:24:31,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:31,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:31,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:31,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:31,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:31,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:31,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:31,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:31,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:31,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:24:31,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:31,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:31,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:31,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:31,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:31,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:31,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:31,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:24:31,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:31,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:31,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:31,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:31,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:31,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:31,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:31,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:31,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:31,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:24:31,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:31,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:31,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:31,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:31,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:31,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:31,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:24:31,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 23:24:31,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:24:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:31,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:24:31,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:31,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:31,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:31,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:24:31,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:31,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-26 23:24:31,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:31,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:24:31,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:32,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 665 [2020-10-26 23:24:32,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:32,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:32,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:32,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:32,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:32,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-26 23:24:32,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:24:32,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:32,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:32,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 844 [2020-10-26 23:24:32,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:32,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:32,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:32,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:24:32,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:32,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:24:32,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:32,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:32,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-26 23:24:32,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:32,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:32,968 INFO L134 CoverageAnalysis]: Checked inductivity of 2475 backedges. 691 proven. 241 refuted. 0 times theorem prover too weak. 1543 trivial. 0 not checked. [2020-10-26 23:24:32,968 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [954531154] [2020-10-26 23:24:32,968 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:32,969 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:32,969 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587711481] [2020-10-26 23:24:32,969 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:32,970 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:32,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:32,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:32,970 INFO L87 Difference]: Start difference. First operand 7180 states and 8102 transitions. Second operand 7 states. [2020-10-26 23:24:34,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:34,962 INFO L93 Difference]: Finished difference Result 14544 states and 16426 transitions. [2020-10-26 23:24:34,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:24:34,968 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 950 [2020-10-26 23:24:34,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:34,989 INFO L225 Difference]: With dead ends: 14544 [2020-10-26 23:24:34,989 INFO L226 Difference]: Without dead ends: 7736 [2020-10-26 23:24:35,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:24:35,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7736 states. [2020-10-26 23:24:35,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7736 to 7730. [2020-10-26 23:24:35,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7730 states. [2020-10-26 23:24:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7730 states to 7730 states and 8670 transitions. [2020-10-26 23:24:35,153 INFO L78 Accepts]: Start accepts. Automaton has 7730 states and 8670 transitions. Word has length 950 [2020-10-26 23:24:35,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:35,154 INFO L481 AbstractCegarLoop]: Abstraction has 7730 states and 8670 transitions. [2020-10-26 23:24:35,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 7730 states and 8670 transitions. [2020-10-26 23:24:35,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 964 [2020-10-26 23:24:35,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:35,170 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:35,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:24:35,171 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:35,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:35,171 INFO L82 PathProgramCache]: Analyzing trace with hash -417114252, now seen corresponding path program 1 times [2020-10-26 23:24:35,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:35,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95226566] [2020-10-26 23:24:35,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:35,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:37,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 989 [2020-10-26 23:24:40,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:24:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4697 [2020-10-26 23:24:40,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:24:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-26 23:24:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:40,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:40,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:24:40,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:40,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:24:40,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:40,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:24:40,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:40,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:24:40,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:40,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:24:40,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:40,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:40,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:24:40,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:40,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:40,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:24:40,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:40,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:40,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:24:40,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:40,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:24:40,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:40,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:24:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:40,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:40,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:40,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:24:40,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:40,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:24:40,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:40,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:40,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:24:40,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:41,361 INFO L134 CoverageAnalysis]: Checked inductivity of 2794 backedges. 765 proven. 2 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2020-10-26 23:24:41,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95226566] [2020-10-26 23:24:41,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:41,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:24:41,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682486118] [2020-10-26 23:24:41,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:24:41,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:41,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:24:41,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:24:41,364 INFO L87 Difference]: Start difference. First operand 7730 states and 8670 transitions. Second operand 7 states. [2020-10-26 23:24:43,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:43,575 INFO L93 Difference]: Finished difference Result 15088 states and 16964 transitions. [2020-10-26 23:24:43,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:24:43,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 963 [2020-10-26 23:24:43,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:43,612 INFO L225 Difference]: With dead ends: 15088 [2020-10-26 23:24:43,613 INFO L226 Difference]: Without dead ends: 7730 [2020-10-26 23:24:43,630 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:24:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7730 states. [2020-10-26 23:24:43,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7730 to 7542. [2020-10-26 23:24:43,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7542 states. [2020-10-26 23:24:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7542 states to 7542 states and 8322 transitions. [2020-10-26 23:24:43,773 INFO L78 Accepts]: Start accepts. Automaton has 7542 states and 8322 transitions. Word has length 963 [2020-10-26 23:24:43,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:43,774 INFO L481 AbstractCegarLoop]: Abstraction has 7542 states and 8322 transitions. [2020-10-26 23:24:43,774 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:24:43,775 INFO L276 IsEmpty]: Start isEmpty. Operand 7542 states and 8322 transitions. [2020-10-26 23:24:43,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 967 [2020-10-26 23:24:43,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:43,790 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:43,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:24:43,790 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:43,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:43,791 INFO L82 PathProgramCache]: Analyzing trace with hash 2142205984, now seen corresponding path program 1 times [2020-10-26 23:24:43,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:43,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1788036828] [2020-10-26 23:24:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:44,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:44,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:44,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:48,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:48,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 992 [2020-10-26 23:24:48,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:24:48,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4730 [2020-10-26 23:24:48,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:24:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:24:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:24:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:49,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:49,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:49,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:49,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:24:49,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:49,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:49,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:49,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:49,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:49,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:49,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:24:49,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:49,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:49,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:49,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:49,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:49,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:49,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:49,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:49,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:49,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:24:49,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:49,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:49,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:49,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:49,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:49,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:49,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:49,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:49,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:24:49,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:49,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:49,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:49,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:49,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:49,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:49,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:49,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:49,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:24:49,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:49,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:49,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:49,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:49,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:49,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:49,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:49,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:49,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:49,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:49,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:24:49,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:49,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:49,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:49,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:49,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:49,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:49,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:49,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:24:49,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:24:49,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:49,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:24:49,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:49,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:24:49,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:49,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:49,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:24:49,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:49,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-26 23:24:49,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:24:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:49,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:24:49,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:49,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:24:49,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:49,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:49,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:49,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:24:49,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:49,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-26 23:24:49,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:49,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:24:49,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:24:49,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:24:49,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:50,338 INFO L134 CoverageAnalysis]: Checked inductivity of 2809 backedges. 1358 proven. 6 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2020-10-26 23:24:50,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1788036828] [2020-10-26 23:24:50,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:24:50,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:24:50,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281307487] [2020-10-26 23:24:50,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:24:50,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:24:50,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:24:50,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:24:50,341 INFO L87 Difference]: Start difference. First operand 7542 states and 8322 transitions. Second operand 9 states. [2020-10-26 23:24:53,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:24:53,761 INFO L93 Difference]: Finished difference Result 16378 states and 18122 transitions. [2020-10-26 23:24:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:24:53,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 966 [2020-10-26 23:24:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:24:53,791 INFO L225 Difference]: With dead ends: 16378 [2020-10-26 23:24:53,791 INFO L226 Difference]: Without dead ends: 9208 [2020-10-26 23:24:53,808 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:24:53,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9208 states. [2020-10-26 23:24:54,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9208 to 9022. [2020-10-26 23:24:54,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9022 states. [2020-10-26 23:24:54,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9022 states to 9022 states and 9925 transitions. [2020-10-26 23:24:54,052 INFO L78 Accepts]: Start accepts. Automaton has 9022 states and 9925 transitions. Word has length 966 [2020-10-26 23:24:54,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:24:54,053 INFO L481 AbstractCegarLoop]: Abstraction has 9022 states and 9925 transitions. [2020-10-26 23:24:54,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:24:54,053 INFO L276 IsEmpty]: Start isEmpty. Operand 9022 states and 9925 transitions. [2020-10-26 23:24:54,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1053 [2020-10-26 23:24:54,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:24:54,073 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:24:54,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:24:54,074 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:24:54,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:24:54,074 INFO L82 PathProgramCache]: Analyzing trace with hash 989612660, now seen corresponding path program 1 times [2020-10-26 23:24:54,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:24:54,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684958027] [2020-10-26 23:24:54,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:24:54,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:54,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:54,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:57,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:59,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:59,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1078 [2020-10-26 23:24:59,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:24:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-26 23:24:59,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:24:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:24:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:24:59,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:59,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:24:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:59,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:59,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:59,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:24:59,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:59,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:24:59,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:59,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:59,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:59,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:24:59,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:59,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:59,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:59,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:24:59,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:59,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:24:59,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:59,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:59,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:59,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:59,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:59,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:24:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:59,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:59,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:59,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:24:59,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:24:59,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:59,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:59,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:59,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:24:59,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:59,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:59,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:59,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:24:59,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:59,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:24:59,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:59,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:59,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:59,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:59,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:24:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:59,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:59,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:59,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:24:59,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:59,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 23:24:59,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:24:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:59,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:24:59,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:59,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:24:59,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:59,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:59,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:24:59,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:24:59,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:24:59,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:24:59,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:24:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:24:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:24:59,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:24:59,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:24:59,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:24:59,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:24:59,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:24:59,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:00,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:00,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:25:00,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:00,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 558 [2020-10-26 23:25:00,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:00,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:00,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:00,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:25:00,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:00,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:25:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:00,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:00,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:00,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:00,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:25:00,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:25:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:00,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 943 [2020-10-26 23:25:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:00,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:00,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:00,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:25:00,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:25:00,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:25:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:01,410 INFO L134 CoverageAnalysis]: Checked inductivity of 3104 backedges. 808 proven. 244 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2020-10-26 23:25:01,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684958027] [2020-10-26 23:25:01,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:01,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:25:01,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335311562] [2020-10-26 23:25:01,412 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:25:01,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:01,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:25:01,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:25:01,413 INFO L87 Difference]: Start difference. First operand 9022 states and 9925 transitions. Second operand 8 states. [2020-10-26 23:25:04,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:04,029 INFO L93 Difference]: Finished difference Result 17678 states and 19479 transitions. [2020-10-26 23:25:04,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:25:04,030 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1052 [2020-10-26 23:25:04,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:04,051 INFO L225 Difference]: With dead ends: 17678 [2020-10-26 23:25:04,051 INFO L226 Difference]: Without dead ends: 9028 [2020-10-26 23:25:04,065 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:25:04,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9028 states. [2020-10-26 23:25:04,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9028 to 9022. [2020-10-26 23:25:04,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9022 states. [2020-10-26 23:25:04,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9022 states to 9022 states and 9919 transitions. [2020-10-26 23:25:04,222 INFO L78 Accepts]: Start accepts. Automaton has 9022 states and 9919 transitions. Word has length 1052 [2020-10-26 23:25:04,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:04,223 INFO L481 AbstractCegarLoop]: Abstraction has 9022 states and 9919 transitions. [2020-10-26 23:25:04,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:25:04,223 INFO L276 IsEmpty]: Start isEmpty. Operand 9022 states and 9919 transitions. [2020-10-26 23:25:04,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1098 [2020-10-26 23:25:04,244 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:04,246 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:04,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:25:04,246 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:04,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:04,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1172890688, now seen corresponding path program 1 times [2020-10-26 23:25:04,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:04,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300865081] [2020-10-26 23:25:04,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:04,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:04,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:09,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:09,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1123 [2020-10-26 23:25:09,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:25:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-10-26 23:25:09,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:25:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:25:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:09,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:09,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:09,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:09,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:09,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:09,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:09,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:25:09,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:09,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:09,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:09,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:09,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:09,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:09,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:09,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:09,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:25:09,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:09,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:09,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:09,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:09,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:09,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:09,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:09,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:09,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:09,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:09,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:09,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:25:09,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:09,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:09,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:09,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:09,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:09,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:09,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:09,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:09,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:09,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:09,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:09,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:09,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:25:09,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:25:09,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:09,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:09,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:09,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:25:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:09,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:09,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:09,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:25:09,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:09,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-26 23:25:09,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:09,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:25:09,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:10,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:25:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:10,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:10,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:25:10,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-26 23:25:10,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:10,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:25:10,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:10,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 809 [2020-10-26 23:25:10,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:10,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:10,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:10,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:10,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-26 23:25:10,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:25:10,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:10,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:10,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 988 [2020-10-26 23:25:10,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:10,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:10,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:25:10,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:10,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:25:10,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:25:10,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:10,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 3348 backedges. 831 proven. 215 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-26 23:25:11,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [300865081] [2020-10-26 23:25:11,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:11,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:25:11,288 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480345789] [2020-10-26 23:25:11,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:25:11,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:11,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:25:11,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:25:11,290 INFO L87 Difference]: Start difference. First operand 9022 states and 9919 transitions. Second operand 8 states. [2020-10-26 23:25:13,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:13,539 INFO L93 Difference]: Finished difference Result 17856 states and 19659 transitions. [2020-10-26 23:25:13,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:25:13,542 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1097 [2020-10-26 23:25:13,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:13,565 INFO L225 Difference]: With dead ends: 17856 [2020-10-26 23:25:13,565 INFO L226 Difference]: Without dead ends: 9206 [2020-10-26 23:25:13,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:25:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9206 states. [2020-10-26 23:25:13,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9206 to 9204. [2020-10-26 23:25:13,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9204 states. [2020-10-26 23:25:13,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9204 states to 9204 states and 10103 transitions. [2020-10-26 23:25:13,738 INFO L78 Accepts]: Start accepts. Automaton has 9204 states and 10103 transitions. Word has length 1097 [2020-10-26 23:25:13,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:13,739 INFO L481 AbstractCegarLoop]: Abstraction has 9204 states and 10103 transitions. [2020-10-26 23:25:13,739 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:25:13,739 INFO L276 IsEmpty]: Start isEmpty. Operand 9204 states and 10103 transitions. [2020-10-26 23:25:13,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1100 [2020-10-26 23:25:13,758 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:13,759 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:13,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:25:13,759 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:13,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:13,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1975040137, now seen corresponding path program 1 times [2020-10-26 23:25:13,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:13,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91355612] [2020-10-26 23:25:13,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:14,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:14,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:14,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:18,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:18,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1127 [2020-10-26 23:25:18,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:25:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-26 23:25:18,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:25:18,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:25:18,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:19,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:19,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:19,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:19,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:19,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:19,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:25:19,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:19,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:19,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:19,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:19,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:19,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:19,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:19,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:19,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:19,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:19,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:25:19,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:19,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:19,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:19,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:19,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:19,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:19,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:19,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:25:19,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:19,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:19,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:19,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:19,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:19,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:19,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:19,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:19,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:19,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:19,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:19,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:19,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:19,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:19,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:19,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:19,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:19,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:19,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:19,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:25:19,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:19,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:19,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:19,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:19,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:19,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:19,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:19,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:19,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:19,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:19,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:25:19,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:19,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:19,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:19,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:19,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:19,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:19,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:25:19,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:19,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:25:19,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:19,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:25:19,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:19,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:25:19,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:19,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:19,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:19,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:25:19,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:19,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:25:19,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:19,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:19,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:19,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:25:19,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:19,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 811 [2020-10-26 23:25:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:19,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:19,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:19,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:25:19,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:25:19,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:19,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:19,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 990 [2020-10-26 23:25:19,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:19,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:19,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:19,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:25:19,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:25:19,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:25:19,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:20,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3677 backedges. 888 proven. 215 refuted. 0 times theorem prover too weak. 2574 trivial. 0 not checked. [2020-10-26 23:25:20,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [91355612] [2020-10-26 23:25:20,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:20,483 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:25:20,483 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015061882] [2020-10-26 23:25:20,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:25:20,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:20,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:25:20,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:25:20,484 INFO L87 Difference]: Start difference. First operand 9204 states and 10103 transitions. Second operand 7 states. [2020-10-26 23:25:22,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:22,499 INFO L93 Difference]: Finished difference Result 18222 states and 20026 transitions. [2020-10-26 23:25:22,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:25:22,499 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1099 [2020-10-26 23:25:22,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:22,525 INFO L225 Difference]: With dead ends: 18222 [2020-10-26 23:25:22,525 INFO L226 Difference]: Without dead ends: 9390 [2020-10-26 23:25:22,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:25:22,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9390 states. [2020-10-26 23:25:22,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9390 to 9022. [2020-10-26 23:25:22,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9022 states. [2020-10-26 23:25:22,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9022 states to 9022 states and 9874 transitions. [2020-10-26 23:25:22,708 INFO L78 Accepts]: Start accepts. Automaton has 9022 states and 9874 transitions. Word has length 1099 [2020-10-26 23:25:22,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:22,709 INFO L481 AbstractCegarLoop]: Abstraction has 9022 states and 9874 transitions. [2020-10-26 23:25:22,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:25:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 9022 states and 9874 transitions. [2020-10-26 23:25:22,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1127 [2020-10-26 23:25:22,729 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:22,729 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-26 23:25:22,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:25:22,730 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:22,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:22,730 INFO L82 PathProgramCache]: Analyzing trace with hash 760244632, now seen corresponding path program 1 times [2020-10-26 23:25:22,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:22,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496958148] [2020-10-26 23:25:22,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:22,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:23,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:27,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:27,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1152 [2020-10-26 23:25:27,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:27,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-26 23:25:27,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:25:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:25:27,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:25:27,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:28,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:28,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:28,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:28,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:28,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:28,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:28,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:25:28,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:28,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:28,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:28,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:28,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:28,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:28,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:28,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:28,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:28,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:25:28,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:28,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:28,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:28,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:28,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:28,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:28,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:28,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:25:28,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:28,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:28,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:28,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:28,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:28,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:28,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:28,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:25:28,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:28,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:28,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:28,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:28,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:25:28,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:28,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:25:28,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:28,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:28,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:28,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:28,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:25:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:28,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:28,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:25:28,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:25:28,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:28,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:28,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:28,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:25:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:28,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:28,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:28,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:25:28,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:28,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-26 23:25:28,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:28,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:28,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:28,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:25:28,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:28,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:25:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:28,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:29,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:29,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:29,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:29,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:29,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-26 23:25:29,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:29,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:29,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:25:29,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:29,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:25:29,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:29,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:29,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:29,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:25:29,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:29,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:25:29,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:29,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:25:29,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:29,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:30,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3432 backedges. 1045 proven. 85 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-26 23:25:30,808 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496958148] [2020-10-26 23:25:30,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:30,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:25:30,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653195560] [2020-10-26 23:25:30,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:25:30,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:30,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:25:30,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:25:30,810 INFO L87 Difference]: Start difference. First operand 9022 states and 9874 transitions. Second operand 8 states. [2020-10-26 23:25:33,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:33,256 INFO L93 Difference]: Finished difference Result 17864 states and 19589 transitions. [2020-10-26 23:25:33,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:25:33,257 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1126 [2020-10-26 23:25:33,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:33,279 INFO L225 Difference]: With dead ends: 17864 [2020-10-26 23:25:33,279 INFO L226 Difference]: Without dead ends: 9214 [2020-10-26 23:25:33,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:25:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9214 states. [2020-10-26 23:25:33,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9214 to 9204. [2020-10-26 23:25:33,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9204 states. [2020-10-26 23:25:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9204 states to 9204 states and 10061 transitions. [2020-10-26 23:25:33,446 INFO L78 Accepts]: Start accepts. Automaton has 9204 states and 10061 transitions. Word has length 1126 [2020-10-26 23:25:33,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:33,447 INFO L481 AbstractCegarLoop]: Abstraction has 9204 states and 10061 transitions. [2020-10-26 23:25:33,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:25:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 9204 states and 10061 transitions. [2020-10-26 23:25:33,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1191 [2020-10-26 23:25:33,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:33,470 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:33,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:25:33,470 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:33,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:33,471 INFO L82 PathProgramCache]: Analyzing trace with hash -391791494, now seen corresponding path program 1 times [2020-10-26 23:25:33,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:33,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [570171298] [2020-10-26 23:25:33,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:33,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:34,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:35,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:36,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:38,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:38,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1220 [2020-10-26 23:25:38,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:25:38,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5054 [2020-10-26 23:25:38,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:38,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:25:38,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:25:38,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 416 [2020-10-26 23:25:38,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:38,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:38,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:38,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:38,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:38,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:38,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:25:38,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:38,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:38,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:38,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:38,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:38,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:38,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:38,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:38,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:38,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:25:38,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:38,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:38,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:38,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:38,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:38,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:39,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:39,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:39,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 23:25:39,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:39,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:39,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:39,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:39,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:39,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:39,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:39,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:39,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:39,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:25:39,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:39,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:39,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:39,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:39,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:39,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:39,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:39,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:39,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:39,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:25:39,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:39,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:39,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:39,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:39,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:39,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:39,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:39,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:39,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:39,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:39,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:25:39,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:39,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:39,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:39,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:39,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:39,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:39,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:25:39,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:39,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:25:39,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:39,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:25:39,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:39,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:25:39,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:39,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:39,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:39,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:39,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:39,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 23:25:39,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:25:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:39,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:25:39,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:39,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:25:39,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:39,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:39,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:39,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:25:39,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:39,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:25:39,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:39,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:25:39,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:25:39,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:39,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:39,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:39,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-26 23:25:39,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:39,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-26 23:25:39,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:39,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:25:39,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:39,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1087 [2020-10-26 23:25:39,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:39,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:39,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:39,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:25:39,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:25:39,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:25:39,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:39,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:41,263 INFO L134 CoverageAnalysis]: Checked inductivity of 4537 backedges. 2253 proven. 449 refuted. 0 times theorem prover too weak. 1835 trivial. 0 not checked. [2020-10-26 23:25:41,263 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [570171298] [2020-10-26 23:25:41,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:41,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:25:41,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38704355] [2020-10-26 23:25:41,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:25:41,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:41,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:25:41,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:25:41,265 INFO L87 Difference]: Start difference. First operand 9204 states and 10061 transitions. Second operand 11 states. [2020-10-26 23:25:45,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:25:45,309 INFO L93 Difference]: Finished difference Result 18226 states and 19943 transitions. [2020-10-26 23:25:45,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 23:25:45,312 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1190 [2020-10-26 23:25:45,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:25:45,333 INFO L225 Difference]: With dead ends: 18226 [2020-10-26 23:25:45,333 INFO L226 Difference]: Without dead ends: 9394 [2020-10-26 23:25:45,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=138, Invalid=414, Unknown=0, NotChecked=0, Total=552 [2020-10-26 23:25:45,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9394 states. [2020-10-26 23:25:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9394 to 9202. [2020-10-26 23:25:45,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9202 states. [2020-10-26 23:25:45,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9202 states to 9202 states and 10043 transitions. [2020-10-26 23:25:45,504 INFO L78 Accepts]: Start accepts. Automaton has 9202 states and 10043 transitions. Word has length 1190 [2020-10-26 23:25:45,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:25:45,506 INFO L481 AbstractCegarLoop]: Abstraction has 9202 states and 10043 transitions. [2020-10-26 23:25:45,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:25:45,506 INFO L276 IsEmpty]: Start isEmpty. Operand 9202 states and 10043 transitions. [2020-10-26 23:25:45,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1214 [2020-10-26 23:25:45,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:25:45,530 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:25:45,530 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:25:45,531 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:25:45,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:25:45,531 INFO L82 PathProgramCache]: Analyzing trace with hash -1898111430, now seen corresponding path program 1 times [2020-10-26 23:25:45,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:25:45,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678503953] [2020-10-26 23:25:45,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:25:45,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:45,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:46,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:46,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:50,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:50,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:50,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1243 [2020-10-26 23:25:50,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:25:50,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5105 [2020-10-26 23:25:50,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:25:50,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:25:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:25:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:50,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:25:50,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:50,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:50,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:50,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:25:50,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:50,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:25:50,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:50,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:50,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:51,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:25:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:51,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:51,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:51,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:25:51,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:25:51,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:51,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:51,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:51,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:25:51,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:51,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:51,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:51,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:25:51,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:25:51,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:51,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:25:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:51,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:51,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:51,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:25:51,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:25:51,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:51,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:51,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:51,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:25:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:51,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:51,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:51,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:25:51,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:51,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:25:51,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:51,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:51,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:51,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:51,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:51,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:25:51,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:51,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:51,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:51,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:25:51,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:51,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:25:51,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:51,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:51,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:51,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:51,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:51,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:25:51,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:51,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:51,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:51,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:25:51,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:25:51,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:25:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:25:51,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:25:51,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:51,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:25:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:51,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:51,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:25:51,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:51,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 23:25:51,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:51,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:25:51,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:51,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:25:51,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:51,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:25:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:51,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:51,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:51,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:51,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:25:51,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:25:51,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 287 [2020-10-26 23:25:51,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:25:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:25:51,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:25:51,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:51,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 925 [2020-10-26 23:25:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:51,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:51,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:51,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:25:51,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:51,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-26 23:25:51,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:51,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:25:51,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:51,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:52,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1104 [2020-10-26 23:25:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:25:52,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:25:52,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:25:52,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:25:52,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:25:52,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:25:52,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:25:52,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:25:52,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:25:52,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:25:52,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:25:53,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4618 backedges. 1519 proven. 516 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked. [2020-10-26 23:25:53,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678503953] [2020-10-26 23:25:53,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:25:53,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:25:53,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837754569] [2020-10-26 23:25:53,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:25:53,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:25:53,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:25:53,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:25:53,293 INFO L87 Difference]: Start difference. First operand 9202 states and 10043 transitions. Second operand 10 states.