/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/Problem15_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:46:02,155 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:46:02,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:46:02,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:46:02,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:46:02,201 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:46:02,203 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:46:02,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:46:02,209 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:46:02,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:46:02,212 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:46:02,214 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:46:02,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:46:02,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:46:02,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:46:02,219 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:46:02,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:46:02,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:46:02,223 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:46:02,226 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:46:02,229 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:46:02,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:46:02,235 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:46:02,236 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:46:02,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:46:02,266 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:46:02,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:46:02,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:46:02,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:46:02,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:46:02,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:46:02,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:46:02,272 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:46:02,272 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:46:02,273 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:46:02,274 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:46:02,274 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:46:02,275 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:46:02,275 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:46:02,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:46:02,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:46:02,278 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 23:46:02,342 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:46:02,342 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:46:02,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:46:02,347 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:46:02,348 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:46:02,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:46:02,350 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:46:02,351 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:46:02,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:46:02,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:46:02,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:46:02,352 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:46:02,352 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:46:02,352 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:46:02,353 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:46:02,354 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:46:02,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:46:02,355 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:46:02,355 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:46:02,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:46:02,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:46:02,356 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:46:02,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:46:02,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:46:02,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:46:02,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:46:02,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:46:02,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:46:02,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:46:02,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:46:02,865 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:46:02,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:46:02,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:46:02,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:46:02,923 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:46:02,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-26 23:46:03,026 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad0767761/c606dbf1da1341999d8ee1e3e65c0bfd/FLAG1bf17ce88 [2020-10-26 23:46:03,906 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:46:03,907 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label45.c [2020-10-26 23:46:03,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad0767761/c606dbf1da1341999d8ee1e3e65c0bfd/FLAG1bf17ce88 [2020-10-26 23:46:04,020 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ad0767761/c606dbf1da1341999d8ee1e3e65c0bfd [2020-10-26 23:46:04,023 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:46:04,031 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:46:04,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:46:04,033 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:46:04,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:46:04,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:46:04" (1/1) ... [2020-10-26 23:46:04,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323deba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:04, skipping insertion in model container [2020-10-26 23:46:04,043 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:46:04" (1/1) ... [2020-10-26 23:46:04,052 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:46:04,124 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:46:04,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:46:04,966 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:46:05,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:46:05,236 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:46:05,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:05 WrapperNode [2020-10-26 23:46:05,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:46:05,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:46:05,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:46:05,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:46:05,257 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:05" (1/1) ... [2020-10-26 23:46:05,257 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:05" (1/1) ... [2020-10-26 23:46:05,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:05" (1/1) ... [2020-10-26 23:46:05,371 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:05" (1/1) ... [2020-10-26 23:46:05,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:05" (1/1) ... [2020-10-26 23:46:05,516 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:05" (1/1) ... [2020-10-26 23:46:05,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:05" (1/1) ... [2020-10-26 23:46:05,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:46:05,556 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:46:05,556 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:46:05,556 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:46:05,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:05" (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 23:46:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:46:05,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:46:05,648 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:46:05,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:46:05,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:46:05,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:46:05,649 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:46:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:46:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:46:05,650 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:46:05,651 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:46:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:46:05,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:46:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:46:05,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:46:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:46:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:46:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:46:05,656 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:46:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:46:05,657 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:46:09,131 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:46:09,134 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:46:09,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:46:09 BoogieIcfgContainer [2020-10-26 23:46:09,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:46:09,142 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:46:09,143 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:46:09,147 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:46:09,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:46:04" (1/3) ... [2020-10-26 23:46:09,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8b1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:46:09, skipping insertion in model container [2020-10-26 23:46:09,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:05" (2/3) ... [2020-10-26 23:46:09,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f8b1cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:46:09, skipping insertion in model container [2020-10-26 23:46:09,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:46:09" (3/3) ... [2020-10-26 23:46:09,152 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label45.c [2020-10-26 23:46:09,167 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:46:09,174 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:46:09,191 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:46:09,240 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:46:09,241 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:46:09,241 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:46:09,241 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:46:09,241 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:46:09,241 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:46:09,242 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:46:09,242 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:46:09,288 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:46:09,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-26 23:46:09,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:09,297 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:09,297 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:09,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:09,307 INFO L82 PathProgramCache]: Analyzing trace with hash 2117039617, now seen corresponding path program 1 times [2020-10-26 23:46:09,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:09,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1831199148] [2020-10-26 23:46:09,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:09,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:10,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:10,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 23:46:10,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:10,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-26 23:46:10,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:46:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:10,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-26 23:46:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:46:10,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:10,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:10,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:10,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:10,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:10,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:10,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:46:10,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:10,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:10,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:10,321 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 23:46:10,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1831199148] [2020-10-26 23:46:10,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:46:10,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:46:10,325 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571087872] [2020-10-26 23:46:10,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:46:10,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:10,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:46:10,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:46:10,354 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:46:18,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:18,709 INFO L93 Difference]: Finished difference Result 1229 states and 2206 transitions. [2020-10-26 23:46:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:46:18,712 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-26 23:46:18,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:18,758 INFO L225 Difference]: With dead ends: 1229 [2020-10-26 23:46:18,759 INFO L226 Difference]: Without dead ends: 709 [2020-10-26 23:46:18,774 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:46:18,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2020-10-26 23:46:18,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 695. [2020-10-26 23:46:18,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-10-26 23:46:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1081 transitions. [2020-10-26 23:46:18,938 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1081 transitions. Word has length 36 [2020-10-26 23:46:18,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:18,939 INFO L481 AbstractCegarLoop]: Abstraction has 695 states and 1081 transitions. [2020-10-26 23:46:18,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:46:18,939 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1081 transitions. [2020-10-26 23:46:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-26 23:46:18,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:18,945 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:46:18,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:46:18,946 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:18,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:18,947 INFO L82 PathProgramCache]: Analyzing trace with hash 950484538, now seen corresponding path program 1 times [2020-10-26 23:46:18,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:18,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679845451] [2020-10-26 23:46:18,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:19,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:19,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:20,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:20,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:20,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:46:20,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:46:20,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1476 [2020-10-26 23:46:20,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:20,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:46:20,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:20,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:46:20,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:46:20,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:20,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:20,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:20,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:20,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:20,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:46:20,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:20,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:20,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:20,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:20,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:20,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:46:20,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:20,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-10-26 23:46:20,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:20,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:46:20,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:20,985 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:46:20,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679845451] [2020-10-26 23:46:20,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:20,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:46:20,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345044896] [2020-10-26 23:46:20,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:46:20,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:20,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:46:20,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:46:20,993 INFO L87 Difference]: Start difference. First operand 695 states and 1081 transitions. Second operand 6 states. [2020-10-26 23:46:27,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:27,785 INFO L93 Difference]: Finished difference Result 1709 states and 2727 transitions. [2020-10-26 23:46:27,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 23:46:27,785 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 106 [2020-10-26 23:46:27,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:27,793 INFO L225 Difference]: With dead ends: 1709 [2020-10-26 23:46:27,793 INFO L226 Difference]: Without dead ends: 1020 [2020-10-26 23:46:27,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:46:27,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1020 states. [2020-10-26 23:46:27,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1020 to 1013. [2020-10-26 23:46:27,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1013 states. [2020-10-26 23:46:27,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1013 states to 1013 states and 1370 transitions. [2020-10-26 23:46:27,855 INFO L78 Accepts]: Start accepts. Automaton has 1013 states and 1370 transitions. Word has length 106 [2020-10-26 23:46:27,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:27,864 INFO L481 AbstractCegarLoop]: Abstraction has 1013 states and 1370 transitions. [2020-10-26 23:46:27,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:46:27,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1013 states and 1370 transitions. [2020-10-26 23:46:27,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-26 23:46:27,872 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:27,875 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:46:27,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:46:27,876 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:27,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:27,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1077347085, now seen corresponding path program 1 times [2020-10-26 23:46:27,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:27,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1320927459] [2020-10-26 23:46:27,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:27,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:28,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:29,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:29,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 23:46:29,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:29,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-26 23:46:29,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:46:29,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:29,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-26 23:46:29,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:29,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:29,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:29,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:29,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:29,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:29,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:46:29,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:29,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:29,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:29,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:29,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:29,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:29,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:29,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:46:29,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:29,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-26 23:46:29,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:29,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:29,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:29,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:46:29,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:46:29,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1320927459] [2020-10-26 23:46:29,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:46:29,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:46:29,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304789560] [2020-10-26 23:46:29,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:46:29,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:29,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:46:29,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:46:29,651 INFO L87 Difference]: Start difference. First operand 1013 states and 1370 transitions. Second operand 7 states. [2020-10-26 23:46:37,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:37,835 INFO L93 Difference]: Finished difference Result 2396 states and 3398 transitions. [2020-10-26 23:46:37,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:46:37,836 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-26 23:46:37,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:37,852 INFO L225 Difference]: With dead ends: 2396 [2020-10-26 23:46:37,852 INFO L226 Difference]: Without dead ends: 1696 [2020-10-26 23:46:37,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:46:37,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2020-10-26 23:46:37,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1349. [2020-10-26 23:46:37,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1349 states. [2020-10-26 23:46:37,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1349 states to 1349 states and 1741 transitions. [2020-10-26 23:46:37,923 INFO L78 Accepts]: Start accepts. Automaton has 1349 states and 1741 transitions. Word has length 119 [2020-10-26 23:46:37,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:37,926 INFO L481 AbstractCegarLoop]: Abstraction has 1349 states and 1741 transitions. [2020-10-26 23:46:37,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:46:37,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1349 states and 1741 transitions. [2020-10-26 23:46:37,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-26 23:46:37,933 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:37,933 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:46:37,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:46:37,934 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:37,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1446893833, now seen corresponding path program 1 times [2020-10-26 23:46:37,937 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:37,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [946043313] [2020-10-26 23:46:37,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:38,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:38,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:39,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:41,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:41,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-26 23:46:41,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:46:41,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3178 [2020-10-26 23:46:41,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:46:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:41,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:46:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:41,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:41,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:41,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:41,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:41,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:41,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:41,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:46:41,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:41,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:41,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:41,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:41,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:41,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:41,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:46:41,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:41,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-10-26 23:46:41,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:41,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:41,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:41,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:46:41,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:42,622 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:46:42,623 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [946043313] [2020-10-26 23:46:42,623 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:46:42,623 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:46:42,624 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062914240] [2020-10-26 23:46:42,624 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:46:42,625 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:42,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:46:42,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:46:42,626 INFO L87 Difference]: Start difference. First operand 1349 states and 1741 transitions. Second operand 7 states. [2020-10-26 23:46:52,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:52,269 INFO L93 Difference]: Finished difference Result 3039 states and 3846 transitions. [2020-10-26 23:46:52,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:46:52,274 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 236 [2020-10-26 23:46:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:52,284 INFO L225 Difference]: With dead ends: 3039 [2020-10-26 23:46:52,285 INFO L226 Difference]: Without dead ends: 1696 [2020-10-26 23:46:52,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:46:52,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1696 states. [2020-10-26 23:46:52,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1696 to 1665. [2020-10-26 23:46:52,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1665 states. [2020-10-26 23:46:52,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2067 transitions. [2020-10-26 23:46:52,349 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2067 transitions. Word has length 236 [2020-10-26 23:46:52,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:52,350 INFO L481 AbstractCegarLoop]: Abstraction has 1665 states and 2067 transitions. [2020-10-26 23:46:52,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:46:52,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2067 transitions. [2020-10-26 23:46:52,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-26 23:46:52,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:52,356 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:46:52,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:46:52,356 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:52,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:52,357 INFO L82 PathProgramCache]: Analyzing trace with hash -686211058, now seen corresponding path program 1 times [2020-10-26 23:46:52,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:52,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1998600090] [2020-10-26 23:46:52,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:52,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:52,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:52,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:54,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:54,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 322 [2020-10-26 23:46:54,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:54,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1944 [2020-10-26 23:46:54,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:46:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:54,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 313 [2020-10-26 23:46:54,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:54,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:54,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:54,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:54,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:54,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:46:54,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:54,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:54,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:54,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:54,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:54,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:55,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:55,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:46:55,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:55,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-10-26 23:46:55,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:55,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:46:55,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:46:55,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1998600090] [2020-10-26 23:46:55,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:55,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:46:55,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941976711] [2020-10-26 23:46:55,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:46:55,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:55,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:46:55,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:46:55,689 INFO L87 Difference]: Start difference. First operand 1665 states and 2067 transitions. Second operand 6 states. [2020-10-26 23:47:10,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:10,322 INFO L93 Difference]: Finished difference Result 2016 states and 2486 transitions. [2020-10-26 23:47:10,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:47:10,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 310 [2020-10-26 23:47:10,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:10,336 INFO L225 Difference]: With dead ends: 2016 [2020-10-26 23:47:10,337 INFO L226 Difference]: Without dead ends: 2013 [2020-10-26 23:47:10,338 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 23:47:10,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2013 states. [2020-10-26 23:47:10,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2013 to 1976. [2020-10-26 23:47:10,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1976 states. [2020-10-26 23:47:10,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1976 states to 1976 states and 2439 transitions. [2020-10-26 23:47:10,408 INFO L78 Accepts]: Start accepts. Automaton has 1976 states and 2439 transitions. Word has length 310 [2020-10-26 23:47:10,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:10,409 INFO L481 AbstractCegarLoop]: Abstraction has 1976 states and 2439 transitions. [2020-10-26 23:47:10,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:47:10,410 INFO L276 IsEmpty]: Start isEmpty. Operand 1976 states and 2439 transitions. [2020-10-26 23:47:10,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2020-10-26 23:47:10,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:10,416 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:10,416 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:47:10,417 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:10,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:10,417 INFO L82 PathProgramCache]: Analyzing trace with hash 702795850, now seen corresponding path program 1 times [2020-10-26 23:47:10,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:10,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180568170] [2020-10-26 23:47:10,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:10,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:10,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:10,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:11,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:12,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:15,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:15,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-26 23:47:15,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:47:15,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-26 23:47:15,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:15,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:47:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:47:15,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 336 [2020-10-26 23:47:15,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:47:15,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:15,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:15,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:15,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:15,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:47:15,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:15,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:47:15,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:15,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:15,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:15,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:16,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:16,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:47:16,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:47:16,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-26 23:47:16,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:16,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:16,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:16,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:47:16,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:16,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:47:16,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:16,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:16,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:17,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:17,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:47:17,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:47:17,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-10-26 23:47:17,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:47:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:17,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:47:17,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:18,581 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 147 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:47:18,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180568170] [2020-10-26 23:47:18,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:18,582 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:47:18,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935573547] [2020-10-26 23:47:18,583 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-26 23:47:18,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:18,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-26 23:47:18,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:47:18,585 INFO L87 Difference]: Start difference. First operand 1976 states and 2439 transitions. Second operand 12 states. [2020-10-26 23:47:18,857 WARN L193 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2020-10-26 23:47:20,316 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-10-26 23:47:20,708 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-10-26 23:47:20,911 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2020-10-26 23:47:21,234 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 72 [2020-10-26 23:47:22,457 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2020-10-26 23:47:22,772 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-10-26 23:47:23,136 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-10-26 23:47:23,321 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2020-10-26 23:47:23,573 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2020-10-26 23:47:38,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:38,218 INFO L93 Difference]: Finished difference Result 2853 states and 3779 transitions. [2020-10-26 23:47:38,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-26 23:47:38,221 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 331 [2020-10-26 23:47:38,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:38,240 INFO L225 Difference]: With dead ends: 2853 [2020-10-26 23:47:38,240 INFO L226 Difference]: Without dead ends: 2850 [2020-10-26 23:47:38,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=285, Invalid=771, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 23:47:38,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2850 states. [2020-10-26 23:47:38,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2850 to 2615. [2020-10-26 23:47:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2615 states. [2020-10-26 23:47:38,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3399 transitions. [2020-10-26 23:47:38,366 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3399 transitions. Word has length 331 [2020-10-26 23:47:38,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:38,367 INFO L481 AbstractCegarLoop]: Abstraction has 2615 states and 3399 transitions. [2020-10-26 23:47:38,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-26 23:47:38,367 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3399 transitions. [2020-10-26 23:47:38,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 407 [2020-10-26 23:47:38,376 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:38,377 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:38,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:47:38,377 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:38,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:38,378 INFO L82 PathProgramCache]: Analyzing trace with hash -601684788, now seen corresponding path program 1 times [2020-10-26 23:47:38,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:38,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158317480] [2020-10-26 23:47:38,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:38,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:38,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:39,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:39,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:40,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:40,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 420 [2020-10-26 23:47:40,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:47:40,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2110 [2020-10-26 23:47:40,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:40,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:40,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:47:40,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:47:40,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:40,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:40,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:40,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:40,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:40,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:40,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:47:40,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:47:40,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:40,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:41,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:41,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:47:41,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-26 23:47:41,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:41,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:47:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:41,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:47:41,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:41,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:41,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:41,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:47:41,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:41,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-26 23:47:41,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:41,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:41,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:41,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:47:41,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:41,755 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:47:41,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158317480] [2020-10-26 23:47:41,757 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:41,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:47:41,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420009548] [2020-10-26 23:47:41,758 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:41,759 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:41,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:41,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:41,760 INFO L87 Difference]: Start difference. First operand 2615 states and 3399 transitions. Second operand 7 states. [2020-10-26 23:47:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:55,804 INFO L93 Difference]: Finished difference Result 6573 states and 8975 transitions. [2020-10-26 23:47:55,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:47:55,805 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 406 [2020-10-26 23:47:55,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:55,827 INFO L225 Difference]: With dead ends: 6573 [2020-10-26 23:47:55,827 INFO L226 Difference]: Without dead ends: 4271 [2020-10-26 23:47:55,835 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 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 23:47:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2020-10-26 23:47:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 4214. [2020-10-26 23:47:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4214 states. [2020-10-26 23:47:55,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4214 states to 4214 states and 5252 transitions. [2020-10-26 23:47:55,977 INFO L78 Accepts]: Start accepts. Automaton has 4214 states and 5252 transitions. Word has length 406 [2020-10-26 23:47:55,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:55,978 INFO L481 AbstractCegarLoop]: Abstraction has 4214 states and 5252 transitions. [2020-10-26 23:47:55,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:47:55,979 INFO L276 IsEmpty]: Start isEmpty. Operand 4214 states and 5252 transitions. [2020-10-26 23:47:55,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-10-26 23:47:55,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:55,988 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:47:55,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:47:55,989 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:55,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:55,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1931330824, now seen corresponding path program 1 times [2020-10-26 23:47:55,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:55,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681060316] [2020-10-26 23:47:55,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:56,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:56,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:56,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:56,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:58,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:59,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:01,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:01,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 443 [2020-10-26 23:48:01,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:48:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-26 23:48:01,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:48:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:48:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-26 23:48:01,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:01,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:01,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:01,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:01,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:01,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:01,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:01,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:48:01,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:01,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:01,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:01,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:01,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:01,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:01,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:01,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:48:01,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 23:48:01,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:01,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:48:01,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:01,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:48:01,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:01,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:01,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:01,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:48:01,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:01,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-26 23:48:01,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:01,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:48:01,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:02,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:48:02,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:02,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:02,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:48:02,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:48:02,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:48:02,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:02,469 INFO L134 CoverageAnalysis]: Checked inductivity of 370 backedges. 268 proven. 4 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2020-10-26 23:48:02,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681060316] [2020-10-26 23:48:02,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:02,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:02,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097262096] [2020-10-26 23:48:02,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:02,472 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:02,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:02,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:02,473 INFO L87 Difference]: Start difference. First operand 4214 states and 5252 transitions. Second operand 7 states. [2020-10-26 23:48:17,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:17,100 INFO L93 Difference]: Finished difference Result 9453 states and 12129 transitions. [2020-10-26 23:48:17,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:48:17,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 427 [2020-10-26 23:48:17,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:17,127 INFO L225 Difference]: With dead ends: 9453 [2020-10-26 23:48:17,128 INFO L226 Difference]: Without dead ends: 5207 [2020-10-26 23:48:17,144 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:48:17,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5207 states. [2020-10-26 23:48:17,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5207 to 5176. [2020-10-26 23:48:17,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5176 states. [2020-10-26 23:48:17,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5176 states to 5176 states and 6079 transitions. [2020-10-26 23:48:17,309 INFO L78 Accepts]: Start accepts. Automaton has 5176 states and 6079 transitions. Word has length 427 [2020-10-26 23:48:17,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:17,310 INFO L481 AbstractCegarLoop]: Abstraction has 5176 states and 6079 transitions. [2020-10-26 23:48:17,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:17,310 INFO L276 IsEmpty]: Start isEmpty. Operand 5176 states and 6079 transitions. [2020-10-26 23:48:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 515 [2020-10-26 23:48:17,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:17,325 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:17,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:48:17,325 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:17,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:17,326 INFO L82 PathProgramCache]: Analyzing trace with hash -285607, now seen corresponding path program 1 times [2020-10-26 23:48:17,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:17,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095756532] [2020-10-26 23:48:17,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:17,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:17,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:17,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:19,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:19,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:22,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:22,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 530 [2020-10-26 23:48:22,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:48:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-26 23:48:22,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:48:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:48:22,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:22,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:22,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:22,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:22,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:22,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:22,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:48:22,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:22,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:22,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:22,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:22,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:22,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:23,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:23,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:48:23,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:23,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-26 23:48:23,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:23,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:23,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:48:23,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:23,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:48:23,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:23,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:23,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:23,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:48:23,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:23,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-26 23:48:23,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:23,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:48:23,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:23,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:48:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:23,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:23,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:23,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:48:23,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:23,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 23:48:23,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:23,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:23,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-26 23:48:23,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:24,055 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 196 proven. 92 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-26 23:48:24,055 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095756532] [2020-10-26 23:48:24,055 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:24,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:48:24,056 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150634697] [2020-10-26 23:48:24,057 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:48:24,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:24,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:48:24,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:48:24,058 INFO L87 Difference]: Start difference. First operand 5176 states and 6079 transitions. Second operand 8 states. [2020-10-26 23:48:36,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:36,442 INFO L93 Difference]: Finished difference Result 11998 states and 14093 transitions. [2020-10-26 23:48:36,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:48:36,452 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 514 [2020-10-26 23:48:36,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:36,498 INFO L225 Difference]: With dead ends: 11998 [2020-10-26 23:48:36,498 INFO L226 Difference]: Without dead ends: 7135 [2020-10-26 23:48:36,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:48:36,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7135 states. [2020-10-26 23:48:36,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7135 to 6768. [2020-10-26 23:48:36,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6768 states. [2020-10-26 23:48:36,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6768 states to 6768 states and 7804 transitions. [2020-10-26 23:48:36,715 INFO L78 Accepts]: Start accepts. Automaton has 6768 states and 7804 transitions. Word has length 514 [2020-10-26 23:48:36,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:36,716 INFO L481 AbstractCegarLoop]: Abstraction has 6768 states and 7804 transitions. [2020-10-26 23:48:36,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:48:36,717 INFO L276 IsEmpty]: Start isEmpty. Operand 6768 states and 7804 transitions. [2020-10-26 23:48:36,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 527 [2020-10-26 23:48:36,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:36,725 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:36,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:48:36,725 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:36,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:36,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1102915041, now seen corresponding path program 1 times [2020-10-26 23:48:36,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:36,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352486277] [2020-10-26 23:48:36,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:36,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:36,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:38,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:38,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:38,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 542 [2020-10-26 23:48:38,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:48:38,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1825 [2020-10-26 23:48:38,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:48:38,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:48:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:38,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:38,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:38,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:38,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:38,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:38,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:48:38,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:38,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:38,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:38,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:38,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:38,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:38,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:48:38,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:38,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:48:38,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:38,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:38,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:39,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:48:39,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:39,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:39,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:39,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:48:39,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:48:39,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:48:39,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:48:39,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:48:39,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:39,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:39,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:39,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-26 23:48:39,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:39,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-26 23:48:39,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:39,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-26 23:48:39,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:39,749 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 269 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:48:39,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352486277] [2020-10-26 23:48:39,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:39,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:39,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157501248] [2020-10-26 23:48:39,752 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:39,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:39,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:39,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:39,754 INFO L87 Difference]: Start difference. First operand 6768 states and 7804 transitions. Second operand 7 states. [2020-10-26 23:48:51,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:51,231 INFO L93 Difference]: Finished difference Result 14839 states and 17761 transitions. [2020-10-26 23:48:51,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:48:51,234 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 526 [2020-10-26 23:48:51,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:51,265 INFO L225 Difference]: With dead ends: 14839 [2020-10-26 23:48:51,265 INFO L226 Difference]: Without dead ends: 8371 [2020-10-26 23:48:51,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:48:51,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8371 states. [2020-10-26 23:48:51,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8371 to 7720. [2020-10-26 23:48:51,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7720 states. [2020-10-26 23:48:51,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7720 states to 7720 states and 8869 transitions. [2020-10-26 23:48:51,528 INFO L78 Accepts]: Start accepts. Automaton has 7720 states and 8869 transitions. Word has length 526 [2020-10-26 23:48:51,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:51,530 INFO L481 AbstractCegarLoop]: Abstraction has 7720 states and 8869 transitions. [2020-10-26 23:48:51,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:51,530 INFO L276 IsEmpty]: Start isEmpty. Operand 7720 states and 8869 transitions. [2020-10-26 23:48:51,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 540 [2020-10-26 23:48:51,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:51,539 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:48:51,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:48:51,540 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:51,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:51,540 INFO L82 PathProgramCache]: Analyzing trace with hash -361682782, now seen corresponding path program 1 times [2020-10-26 23:48:51,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:51,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278447201] [2020-10-26 23:48:51,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:51,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:53,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:53,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-26 23:48:53,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:48:53,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1986 [2020-10-26 23:48:53,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:48:53,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-26 23:48:53,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:53,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:53,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:53,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:53,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:53,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:48:53,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:53,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:53,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:53,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:53,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:53,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:53,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:53,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:48:53,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-26 23:48:53,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:53,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:53,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:54,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:48:54,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:54,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:54,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:48:54,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:54,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-26 23:48:54,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:54,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:54,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:54,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:48:54,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:54,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:48:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:54,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:54,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:54,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-26 23:48:54,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 23:48:54,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:54,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:54,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:54,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-26 23:48:54,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:54,585 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 295 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:48:54,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278447201] [2020-10-26 23:48:54,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:54,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:54,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745481515] [2020-10-26 23:48:54,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:54,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:54,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:54,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:54,588 INFO L87 Difference]: Start difference. First operand 7720 states and 8869 transitions. Second operand 7 states. [2020-10-26 23:49:07,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:07,762 INFO L93 Difference]: Finished difference Result 17362 states and 20624 transitions. [2020-10-26 23:49:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:49:07,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 539 [2020-10-26 23:49:07,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:07,795 INFO L225 Difference]: With dead ends: 17362 [2020-10-26 23:49:07,796 INFO L226 Difference]: Without dead ends: 9955 [2020-10-26 23:49:07,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:49:07,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9955 states. [2020-10-26 23:49:08,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9955 to 9919. [2020-10-26 23:49:08,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9919 states. [2020-10-26 23:49:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9919 states to 9919 states and 11644 transitions. [2020-10-26 23:49:08,072 INFO L78 Accepts]: Start accepts. Automaton has 9919 states and 11644 transitions. Word has length 539 [2020-10-26 23:49:08,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:08,074 INFO L481 AbstractCegarLoop]: Abstraction has 9919 states and 11644 transitions. [2020-10-26 23:49:08,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:08,074 INFO L276 IsEmpty]: Start isEmpty. Operand 9919 states and 11644 transitions. [2020-10-26 23:49:08,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 561 [2020-10-26 23:49:08,083 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:08,086 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:08,087 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:49:08,087 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:08,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:08,088 INFO L82 PathProgramCache]: Analyzing trace with hash -1450618008, now seen corresponding path program 1 times [2020-10-26 23:49:08,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:08,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [399094338] [2020-10-26 23:49:08,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:08,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:09,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:10,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:10,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 576 [2020-10-26 23:49:10,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:49:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2083 [2020-10-26 23:49:10,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:49:10,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-26 23:49:10,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:10,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:10,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:10,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:10,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:10,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:10,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:10,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:49:10,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:10,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:10,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:10,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:10,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:10,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:10,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:10,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:10,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:49:10,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:10,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-26 23:49:10,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:10,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:10,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:10,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:10,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:10,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:49:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:10,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:10,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:10,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:49:10,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:10,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-26 23:49:10,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:10,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:49:10,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:10,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:49:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:10,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:11,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:11,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-26 23:49:11,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-26 23:49:11,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:11,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-10-26 23:49:11,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:11,402 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:49:11,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [399094338] [2020-10-26 23:49:11,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:11,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:11,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295424858] [2020-10-26 23:49:11,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:11,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:11,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:11,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:11,405 INFO L87 Difference]: Start difference. First operand 9919 states and 11644 transitions. Second operand 7 states. [2020-10-26 23:49:20,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:20,563 INFO L93 Difference]: Finished difference Result 19559 states and 23052 transitions. [2020-10-26 23:49:20,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:49:20,566 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 560 [2020-10-26 23:49:20,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:20,610 INFO L225 Difference]: With dead ends: 19559 [2020-10-26 23:49:20,610 INFO L226 Difference]: Without dead ends: 9953 [2020-10-26 23:49:20,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:49:20,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9953 states. [2020-10-26 23:49:20,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9953 to 9312. [2020-10-26 23:49:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9312 states. [2020-10-26 23:49:20,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9312 states to 9312 states and 10658 transitions. [2020-10-26 23:49:20,858 INFO L78 Accepts]: Start accepts. Automaton has 9312 states and 10658 transitions. Word has length 560 [2020-10-26 23:49:20,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:20,860 INFO L481 AbstractCegarLoop]: Abstraction has 9312 states and 10658 transitions. [2020-10-26 23:49:20,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:20,860 INFO L276 IsEmpty]: Start isEmpty. Operand 9312 states and 10658 transitions. [2020-10-26 23:49:20,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2020-10-26 23:49:20,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:20,870 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:49:20,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:49:20,870 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:20,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:20,871 INFO L82 PathProgramCache]: Analyzing trace with hash 373254554, now seen corresponding path program 1 times [2020-10-26 23:49:20,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:20,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [233664031] [2020-10-26 23:49:20,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:21,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:21,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:23,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:26,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:26,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 577 [2020-10-26 23:49:26,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:49:26,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-26 23:49:26,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:49:26,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 23:49:26,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:26,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:26,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:26,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:26,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:26,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:26,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:26,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:49:26,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:26,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:26,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:26,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:26,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:26,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:26,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:26,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:49:26,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:26,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 23:49:26,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:26,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:26,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:26,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:49:26,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:26,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:26,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:26,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:49:26,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:26,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:49:26,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:26,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:26,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:26,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:49:26,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:26,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:49:26,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:26,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:27,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:27,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:49:27,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:27,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-26 23:49:27,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:27,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:27,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:27,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:49:27,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:27,496 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 322 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:49:27,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [233664031] [2020-10-26 23:49:27,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:27,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:27,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501621038] [2020-10-26 23:49:27,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:27,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:27,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:27,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:27,500 INFO L87 Difference]: Start difference. First operand 9312 states and 10658 transitions. Second operand 7 states.