/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/forester-heap/sll-reverse_simple.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:23:45,246 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:23:45,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:23:45,290 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:23:45,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:23:45,299 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:23:45,301 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:23:45,305 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:23:45,308 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:23:45,310 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:23:45,311 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:23:45,312 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:23:45,312 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:23:45,315 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:23:45,318 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:23:45,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:23:45,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:23:45,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:23:45,323 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:23:45,331 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:23:45,334 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:23:45,335 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:23:45,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:23:45,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:23:45,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:23:45,349 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:23:45,350 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:23:45,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:23:45,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:23:45,360 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:23:45,360 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:23:45,361 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:23:45,362 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:23:45,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:23:45,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:23:45,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:23:45,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:23:45,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:23:45,367 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:23:45,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:23:45,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:23:45,370 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 [2020-10-14 23:23:45,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:23:45,409 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:23:45,411 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:23:45,411 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:23:45,411 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:23:45,411 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:23:45,412 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:23:45,412 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:23:45,412 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:23:45,412 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:23:45,413 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:23:45,413 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:23:45,414 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:23:45,414 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:23:45,414 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:23:45,414 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:23:45,414 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:23:45,415 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:23:45,415 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:23:45,415 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:23:45,415 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:23:45,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:23:45,416 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:23:45,416 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:23:45,416 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:23:45,416 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:23:45,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:23:45,416 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:23:45,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:23:45,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:23:45,722 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:23:45,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:23:45,738 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:23:45,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:23:45,740 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:23:45,741 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-reverse_simple.i [2020-10-14 23:23:45,804 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eadca276/736cfbaffd044c7bb62a29137344ec7c/FLAGbe025dfee [2020-10-14 23:23:46,293 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:23:46,294 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/sll-reverse_simple.i [2020-10-14 23:23:46,310 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eadca276/736cfbaffd044c7bb62a29137344ec7c/FLAGbe025dfee [2020-10-14 23:23:46,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9eadca276/736cfbaffd044c7bb62a29137344ec7c [2020-10-14 23:23:46,580 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:23:46,581 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:23:46,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:23:46,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:23:46,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:23:46,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:23:46" (1/1) ... [2020-10-14 23:23:46,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23465623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:23:46, skipping insertion in model container [2020-10-14 23:23:46,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:23:46" (1/1) ... [2020-10-14 23:23:46,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:23:46,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:23:47,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:23:47,196 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:23:47,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:23:47,327 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:23:47,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:23:47 WrapperNode [2020-10-14 23:23:47,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:23:47,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:23:47,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:23:47,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:23:47,343 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:23:47" (1/1) ... [2020-10-14 23:23:47,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:23:47" (1/1) ... [2020-10-14 23:23:47,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:23:47" (1/1) ... [2020-10-14 23:23:47,362 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:23:47" (1/1) ... [2020-10-14 23:23:47,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:23:47" (1/1) ... [2020-10-14 23:23:47,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:23:47" (1/1) ... [2020-10-14 23:23:47,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:23:47" (1/1) ... [2020-10-14 23:23:47,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:23:47,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:23:47,407 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:23:47,407 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:23:47,408 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:23:47" (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 [2020-10-14 23:23:47,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:23:47,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:23:47,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:23:47,473 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-14 23:23:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-14 23:23:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-14 23:23:47,474 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-14 23:23:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-14 23:23:47,475 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-14 23:23:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-14 23:23:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-14 23:23:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-14 23:23:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-14 23:23:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-14 23:23:47,476 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-14 23:23:47,477 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-14 23:23:47,477 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-14 23:23:47,478 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-14 23:23:47,478 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-14 23:23:47,478 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-14 23:23:47,479 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-14 23:23:47,479 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-14 23:23:47,479 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-14 23:23:47,479 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-14 23:23:47,481 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-14 23:23:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-14 23:23:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-14 23:23:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-14 23:23:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-14 23:23:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-14 23:23:47,482 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-14 23:23:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-14 23:23:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-14 23:23:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-14 23:23:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-14 23:23:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-14 23:23:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-14 23:23:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-14 23:23:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-14 23:23:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-14 23:23:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-14 23:23:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-14 23:23:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-14 23:23:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-14 23:23:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-14 23:23:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-14 23:23:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-14 23:23:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-14 23:23:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-14 23:23:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-14 23:23:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-14 23:23:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-14 23:23:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-14 23:23:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-14 23:23:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-14 23:23:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-14 23:23:47,486 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-14 23:23:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-14 23:23:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-14 23:23:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-14 23:23:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-14 23:23:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-14 23:23:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:23:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-14 23:23:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-14 23:23:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-14 23:23:47,487 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 23:23:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-14 23:23:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-14 23:23:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-14 23:23:47,488 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-14 23:23:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-14 23:23:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-14 23:23:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-14 23:23:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-14 23:23:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-14 23:23:47,489 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-14 23:23:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-14 23:23:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-14 23:23:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-14 23:23:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-14 23:23:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-14 23:23:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-14 23:23:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-14 23:23:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-14 23:23:47,490 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-14 23:23:47,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-14 23:23:47,491 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-14 23:23:47,491 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-14 23:23:47,491 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-14 23:23:47,491 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-14 23:23:47,491 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-14 23:23:47,491 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-14 23:23:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-14 23:23:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-14 23:23:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-14 23:23:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-14 23:23:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-14 23:23:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-14 23:23:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-14 23:23:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-14 23:23:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-14 23:23:47,492 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-14 23:23:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-14 23:23:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-14 23:23:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-14 23:23:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:23:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:23:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:23:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-14 23:23:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 23:23:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:23:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 23:23:47,493 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:23:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:23:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:23:47,494 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:23:48,036 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:23:48,036 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-10-14 23:23:48,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:23:48 BoogieIcfgContainer [2020-10-14 23:23:48,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:23:48,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:23:48,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:23:48,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:23:48,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:23:46" (1/3) ... [2020-10-14 23:23:48,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9ecb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:23:48, skipping insertion in model container [2020-10-14 23:23:48,047 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:23:47" (2/3) ... [2020-10-14 23:23:48,048 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c9ecb29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:23:48, skipping insertion in model container [2020-10-14 23:23:48,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:23:48" (3/3) ... [2020-10-14 23:23:48,050 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-reverse_simple.i [2020-10-14 23:23:48,060 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:23:48,068 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-10-14 23:23:48,084 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-14 23:23:48,109 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:23:48,110 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:23:48,110 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:23:48,110 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:23:48,110 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:23:48,111 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:23:48,111 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:23:48,111 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:23:48,130 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-10-14 23:23:48,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-14 23:23:48,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:48,137 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:48,138 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:48,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:48,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1398993325, now seen corresponding path program 1 times [2020-10-14 23:23:48,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:48,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1361813863] [2020-10-14 23:23:48,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:48,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:48,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:48,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:48,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 23:23:48,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:23:48,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-14 23:23:48,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:48,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:23:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:48,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:23:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 19 [2020-10-14 23:23:48,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:48,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:48,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:48,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:48,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:48,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:48,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:23:48,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:48,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:48,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:48,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:48,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:48,616 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1361813863] [2020-10-14 23:23:48,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:23:48,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-14 23:23:48,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128442839] [2020-10-14 23:23:48,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 23:23:48,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:48,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 23:23:48,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-14 23:23:48,641 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 5 states. [2020-10-14 23:23:48,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:48,850 INFO L93 Difference]: Finished difference Result 88 states and 142 transitions. [2020-10-14 23:23:48,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:23:48,852 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-14 23:23:48,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:48,862 INFO L225 Difference]: With dead ends: 88 [2020-10-14 23:23:48,862 INFO L226 Difference]: Without dead ends: 47 [2020-10-14 23:23:48,866 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:23:48,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-14 23:23:48,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 41. [2020-10-14 23:23:48,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-14 23:23:48,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 50 transitions. [2020-10-14 23:23:48,909 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 50 transitions. Word has length 11 [2020-10-14 23:23:48,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:48,910 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 50 transitions. [2020-10-14 23:23:48,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 23:23:48,910 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 50 transitions. [2020-10-14 23:23:48,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-14 23:23:48,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:48,911 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:48,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:23:48,912 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:48,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:48,912 INFO L82 PathProgramCache]: Analyzing trace with hash -1409287098, now seen corresponding path program 1 times [2020-10-14 23:23:48,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:48,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367571612] [2020-10-14 23:23:48,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:48,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:48,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:48,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:49,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:49,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-14 23:23:49,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:23:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-14 23:23:49,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:49,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:23:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-14 23:23:49,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-14 23:23:49,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:49,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:49,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:49,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:49,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:49,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:49,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:23:49,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:49,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:49,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:49,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:49,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:49,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367571612] [2020-10-14 23:23:49,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:49,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 23:23:49,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307906724] [2020-10-14 23:23:49,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:23:49,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:49,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:23:49,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:23:49,451 INFO L87 Difference]: Start difference. First operand 41 states and 50 transitions. Second operand 6 states. [2020-10-14 23:23:49,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:49,700 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2020-10-14 23:23:49,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:23:49,701 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-10-14 23:23:49,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:49,709 INFO L225 Difference]: With dead ends: 49 [2020-10-14 23:23:49,709 INFO L226 Difference]: Without dead ends: 45 [2020-10-14 23:23:49,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:23:49,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-14 23:23:49,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 32. [2020-10-14 23:23:49,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:23:49,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-14 23:23:49,726 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 20 [2020-10-14 23:23:49,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:49,727 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-14 23:23:49,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:23:49,728 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-14 23:23:49,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:23:49,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:49,730 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] [2020-10-14 23:23:49,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:23:49,735 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:49,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:49,735 INFO L82 PathProgramCache]: Analyzing trace with hash -66986961, now seen corresponding path program 1 times [2020-10-14 23:23:49,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:49,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1531702642] [2020-10-14 23:23:49,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:49,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:49,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:49,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:50,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:50,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:50,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:50,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:23:50,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:23:50,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-14 23:23:50,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:50,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:50,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:23:50,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:50,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:23:50,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:50,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:50,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:50,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:50,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:50,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:23:50,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:50,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:50,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:50,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:50,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1531702642] [2020-10-14 23:23:50,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:50,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:23:50,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982221926] [2020-10-14 23:23:50,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:23:50,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:50,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:23:50,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:23:50,837 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 11 states. [2020-10-14 23:23:51,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:51,208 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2020-10-14 23:23:51,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:23:51,208 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-14 23:23:51,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:51,210 INFO L225 Difference]: With dead ends: 77 [2020-10-14 23:23:51,210 INFO L226 Difference]: Without dead ends: 68 [2020-10-14 23:23:51,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:51,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-14 23:23:51,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 46. [2020-10-14 23:23:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:23:51,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-14 23:23:51,231 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2020-10-14 23:23:51,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:51,231 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-14 23:23:51,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:23:51,231 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-14 23:23:51,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-14 23:23:51,232 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:51,232 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] [2020-10-14 23:23:51,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:23:51,232 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:51,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:51,233 INFO L82 PathProgramCache]: Analyzing trace with hash 613071409, now seen corresponding path program 1 times [2020-10-14 23:23:51,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:51,235 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051341837] [2020-10-14 23:23:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:51,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:51,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:51,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:51,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:51,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:51,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:51,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-14 23:23:51,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:23:51,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 488 [2020-10-14 23:23:51,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:51,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:51,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:23:51,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-14 23:23:51,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:23:51,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:51,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:51,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:51,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:51,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:51,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:51,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:23:51,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:51,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:51,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:51,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051341837] [2020-10-14 23:23:51,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:51,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:23:51,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003801789] [2020-10-14 23:23:51,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:23:51,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:51,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:23:51,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:23:51,996 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 11 states. [2020-10-14 23:23:52,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:52,567 INFO L93 Difference]: Finished difference Result 99 states and 123 transitions. [2020-10-14 23:23:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:23:52,569 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-14 23:23:52,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:52,571 INFO L225 Difference]: With dead ends: 99 [2020-10-14 23:23:52,572 INFO L226 Difference]: Without dead ends: 90 [2020-10-14 23:23:52,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:23:52,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-14 23:23:52,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 46. [2020-10-14 23:23:52,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:23:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2020-10-14 23:23:52,587 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 24 [2020-10-14 23:23:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:52,588 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2020-10-14 23:23:52,588 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:23:52,588 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2020-10-14 23:23:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:23:52,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:52,589 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:52,590 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:23:52,590 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:52,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:52,593 INFO L82 PathProgramCache]: Analyzing trace with hash -481772003, now seen corresponding path program 2 times [2020-10-14 23:23:52,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:52,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143543532] [2020-10-14 23:23:52,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:52,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:52,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:52,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:52,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:52,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:52,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:23:52,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:23:52,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-14 23:23:52,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:52,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:23:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:52,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:23:52,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:53,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:53,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:53,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:53,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:53,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:53,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:53,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:23:53,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:53,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:53,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:53,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:53,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143543532] [2020-10-14 23:23:53,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:53,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:23:53,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905887479] [2020-10-14 23:23:53,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:23:53,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:53,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:23:53,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:23:53,294 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand 12 states. [2020-10-14 23:23:53,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:53,917 INFO L93 Difference]: Finished difference Result 103 states and 127 transitions. [2020-10-14 23:23:53,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:23:53,918 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 25 [2020-10-14 23:23:53,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:53,920 INFO L225 Difference]: With dead ends: 103 [2020-10-14 23:23:53,920 INFO L226 Difference]: Without dead ends: 101 [2020-10-14 23:23:53,921 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:23:53,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-14 23:23:53,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 63. [2020-10-14 23:23:53,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-14 23:23:53,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 81 transitions. [2020-10-14 23:23:53,943 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 81 transitions. Word has length 25 [2020-10-14 23:23:53,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:53,943 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 81 transitions. [2020-10-14 23:23:53,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:23:53,944 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 81 transitions. [2020-10-14 23:23:53,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:23:53,945 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:53,945 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:53,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:23:53,946 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:53,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:53,946 INFO L82 PathProgramCache]: Analyzing trace with hash -481770081, now seen corresponding path program 1 times [2020-10-14 23:23:53,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:53,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353985459] [2020-10-14 23:23:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:53,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:53,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:53,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:54,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:54,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:54,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:54,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:23:54,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:23:54,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 648 [2020-10-14 23:23:54,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:54,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:54,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:23:54,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:54,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-14 23:23:54,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:54,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:54,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:54,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:54,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:54,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:54,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:54,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:54,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:54,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:54,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:54,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:54,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353985459] [2020-10-14 23:23:54,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:54,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:23:54,765 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912708982] [2020-10-14 23:23:54,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:23:54,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:54,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:23:54,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:23:54,767 INFO L87 Difference]: Start difference. First operand 63 states and 81 transitions. Second operand 10 states. [2020-10-14 23:23:55,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:55,212 INFO L93 Difference]: Finished difference Result 121 states and 154 transitions. [2020-10-14 23:23:55,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:23:55,213 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-14 23:23:55,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:55,214 INFO L225 Difference]: With dead ends: 121 [2020-10-14 23:23:55,215 INFO L226 Difference]: Without dead ends: 112 [2020-10-14 23:23:55,215 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:23:55,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-10-14 23:23:55,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 77. [2020-10-14 23:23:55,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-14 23:23:55,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 99 transitions. [2020-10-14 23:23:55,227 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 99 transitions. Word has length 25 [2020-10-14 23:23:55,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:55,228 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 99 transitions. [2020-10-14 23:23:55,228 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:23:55,228 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 99 transitions. [2020-10-14 23:23:55,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-14 23:23:55,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:55,229 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:55,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:23:55,230 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:55,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:55,230 INFO L82 PathProgramCache]: Analyzing trace with hash -874797091, now seen corresponding path program 1 times [2020-10-14 23:23:55,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:55,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1587313247] [2020-10-14 23:23:55,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:55,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:55,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:55,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:55,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-14 23:23:55,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:23:55,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-14 23:23:55,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:55,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:23:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:55,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:23:55,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:55,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:55,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:55,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:55,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:55,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:55,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:55,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:55,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 23:23:55,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1587313247] [2020-10-14 23:23:55,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:23:55,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:23:55,636 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840458484] [2020-10-14 23:23:55,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:23:55,637 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:55,637 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:23:55,637 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:23:55,637 INFO L87 Difference]: Start difference. First operand 77 states and 99 transitions. Second operand 6 states. [2020-10-14 23:23:55,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:55,814 INFO L93 Difference]: Finished difference Result 105 states and 132 transitions. [2020-10-14 23:23:55,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:23:55,814 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-14 23:23:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:55,815 INFO L225 Difference]: With dead ends: 105 [2020-10-14 23:23:55,816 INFO L226 Difference]: Without dead ends: 83 [2020-10-14 23:23:55,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:23:55,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-14 23:23:55,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 70. [2020-10-14 23:23:55,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-14 23:23:55,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2020-10-14 23:23:55,827 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 25 [2020-10-14 23:23:55,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:55,828 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2020-10-14 23:23:55,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:23:55,828 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2020-10-14 23:23:55,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-14 23:23:55,829 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:55,829 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:55,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:23:55,830 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:55,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:55,830 INFO L82 PathProgramCache]: Analyzing trace with hash -455206417, now seen corresponding path program 3 times [2020-10-14 23:23:55,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:55,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045079068] [2020-10-14 23:23:55,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:55,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:55,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:56,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:56,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:56,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-14 23:23:56,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:23:56,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-14 23:23:56,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:56,226 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:56,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:23:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:56,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:23:56,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:56,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:56,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:56,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:56,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:56,321 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:56,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:56,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:56,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:56,322 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:56,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:56,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:56,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:56,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:23:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:56,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045079068] [2020-10-14 23:23:56,327 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:56,327 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:23:56,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110670070] [2020-10-14 23:23:56,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:23:56,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:56,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:23:56,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:23:56,328 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 9 states. [2020-10-14 23:23:56,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:56,850 INFO L93 Difference]: Finished difference Result 138 states and 175 transitions. [2020-10-14 23:23:56,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:23:56,850 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-14 23:23:56,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:56,851 INFO L225 Difference]: With dead ends: 138 [2020-10-14 23:23:56,852 INFO L226 Difference]: Without dead ends: 99 [2020-10-14 23:23:56,854 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:23:56,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-14 23:23:56,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2020-10-14 23:23:56,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-14 23:23:56,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 111 transitions. [2020-10-14 23:23:56,875 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 111 transitions. Word has length 26 [2020-10-14 23:23:56,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:56,875 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 111 transitions. [2020-10-14 23:23:56,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:23:56,875 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 111 transitions. [2020-10-14 23:23:56,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:23:56,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:56,882 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:56,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:23:56,883 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:56,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:56,884 INFO L82 PathProgramCache]: Analyzing trace with hash 511622872, now seen corresponding path program 1 times [2020-10-14 23:23:56,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:56,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [40082454] [2020-10-14 23:23:56,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:56,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:56,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:57,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:57,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:57,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:23:57,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:23:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 633 [2020-10-14 23:23:57,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:57,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:23:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:57,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:23:57,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:57,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:57,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:57,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:57,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:57,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:57,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:23:57,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:57,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:57,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:57,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:57,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-14 23:23:57,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [40082454] [2020-10-14 23:23:57,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:57,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:23:57,851 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564933967] [2020-10-14 23:23:57,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:23:57,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:57,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:23:57,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:23:57,853 INFO L87 Difference]: Start difference. First operand 90 states and 111 transitions. Second operand 12 states. [2020-10-14 23:23:58,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:58,530 INFO L93 Difference]: Finished difference Result 113 states and 137 transitions. [2020-10-14 23:23:58,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:23:58,530 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-14 23:23:58,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:58,532 INFO L225 Difference]: With dead ends: 113 [2020-10-14 23:23:58,532 INFO L226 Difference]: Without dead ends: 111 [2020-10-14 23:23:58,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=379, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:23:58,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-14 23:23:58,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 83. [2020-10-14 23:23:58,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-14 23:23:58,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 103 transitions. [2020-10-14 23:23:58,543 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 103 transitions. Word has length 27 [2020-10-14 23:23:58,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:58,543 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 103 transitions. [2020-10-14 23:23:58,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:23:58,544 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 103 transitions. [2020-10-14 23:23:58,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:23:58,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:58,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:58,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:23:58,545 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:58,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:58,546 INFO L82 PathProgramCache]: Analyzing trace with hash 118595862, now seen corresponding path program 1 times [2020-10-14 23:23:58,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:58,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761397208] [2020-10-14 23:23:58,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:58,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:58,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:58,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:23:58,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:58,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-10-14 23:23:58,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:58,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:58,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:23:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:23:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:23:58,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:59,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:23:59,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:59,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:59,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:23:59,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:23:59,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:23:59,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:23:59,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:23:59,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:23:59,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:23:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:23:59,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:23:59,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:23:59,169 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:23:59,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761397208] [2020-10-14 23:23:59,170 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:23:59,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:23:59,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758050000] [2020-10-14 23:23:59,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:23:59,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:23:59,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:23:59,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:23:59,173 INFO L87 Difference]: Start difference. First operand 83 states and 103 transitions. Second operand 13 states. [2020-10-14 23:23:59,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:23:59,815 INFO L93 Difference]: Finished difference Result 124 states and 151 transitions. [2020-10-14 23:23:59,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:23:59,816 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-10-14 23:23:59,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:23:59,818 INFO L225 Difference]: With dead ends: 124 [2020-10-14 23:23:59,818 INFO L226 Difference]: Without dead ends: 122 [2020-10-14 23:23:59,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:23:59,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-14 23:23:59,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 87. [2020-10-14 23:23:59,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-14 23:23:59,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 109 transitions. [2020-10-14 23:23:59,832 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 109 transitions. Word has length 27 [2020-10-14 23:23:59,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:23:59,835 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 109 transitions. [2020-10-14 23:23:59,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:23:59,835 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 109 transitions. [2020-10-14 23:23:59,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-14 23:23:59,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:23:59,839 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:23:59,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:23:59,839 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:23:59,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:23:59,839 INFO L82 PathProgramCache]: Analyzing trace with hash 118597784, now seen corresponding path program 1 times [2020-10-14 23:23:59,840 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:23:59,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776548113] [2020-10-14 23:23:59,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:23:59,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:23:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:23:59,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:00,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:00,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-14 23:24:00,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:00,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 363 [2020-10-14 23:24:00,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:00,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:00,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:24:00,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:00,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:00,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:00,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:00,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:00,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:00,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:00,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:24:00,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:00,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:00,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:00,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:00,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776548113] [2020-10-14 23:24:00,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:00,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:00,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600063034] [2020-10-14 23:24:00,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:00,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:00,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:00,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:00,478 INFO L87 Difference]: Start difference. First operand 87 states and 109 transitions. Second operand 12 states. [2020-10-14 23:24:00,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:00,997 INFO L93 Difference]: Finished difference Result 135 states and 167 transitions. [2020-10-14 23:24:00,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:24:00,999 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-10-14 23:24:00,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:01,000 INFO L225 Difference]: With dead ends: 135 [2020-10-14 23:24:01,000 INFO L226 Difference]: Without dead ends: 126 [2020-10-14 23:24:01,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:01,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-14 23:24:01,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 80. [2020-10-14 23:24:01,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-14 23:24:01,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2020-10-14 23:24:01,014 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 27 [2020-10-14 23:24:01,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:01,014 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2020-10-14 23:24:01,014 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:01,014 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2020-10-14 23:24:01,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:24:01,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:01,015 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:24:01,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:24:01,016 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:01,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:01,016 INFO L82 PathProgramCache]: Analyzing trace with hash -1416587397, now seen corresponding path program 2 times [2020-10-14 23:24:01,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:01,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597285099] [2020-10-14 23:24:01,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:01,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:01,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:02,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:02,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-14 23:24:02,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:02,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 975 [2020-10-14 23:24:02,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:02,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:24:02,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:02,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:24:02,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:02,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:02,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:02,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:02,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:02,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:02,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:02,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:02,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:02,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:02,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:02,552 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:02,553 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597285099] [2020-10-14 23:24:02,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:02,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:24:02,554 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544558451] [2020-10-14 23:24:02,554 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:24:02,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:02,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:24:02,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:02,555 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 14 states. [2020-10-14 23:24:03,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:03,681 INFO L93 Difference]: Finished difference Result 162 states and 203 transitions. [2020-10-14 23:24:03,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:24:03,682 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 30 [2020-10-14 23:24:03,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:03,683 INFO L225 Difference]: With dead ends: 162 [2020-10-14 23:24:03,683 INFO L226 Difference]: Without dead ends: 153 [2020-10-14 23:24:03,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=69, Invalid=393, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:24:03,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-14 23:24:03,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 95. [2020-10-14 23:24:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-14 23:24:03,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 122 transitions. [2020-10-14 23:24:03,706 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 122 transitions. Word has length 30 [2020-10-14 23:24:03,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:03,706 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 122 transitions. [2020-10-14 23:24:03,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:24:03,706 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 122 transitions. [2020-10-14 23:24:03,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:24:03,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:03,708 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:24:03,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:24:03,709 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:03,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:03,709 INFO L82 PathProgramCache]: Analyzing trace with hash 215847921, now seen corresponding path program 1 times [2020-10-14 23:24:03,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:03,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408270132] [2020-10-14 23:24:03,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:03,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:03,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:03,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:03,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:03,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:04,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:05,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:05,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:24:05,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:24:05,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1951 [2020-10-14 23:24:05,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:05,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:05,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:05,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:24:05,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:05,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:05,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:05,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:05,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:05,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:05,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:05,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:05,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:05,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:05,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:05,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408270132] [2020-10-14 23:24:05,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:05,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:05,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171799063] [2020-10-14 23:24:05,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:05,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:05,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:05,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:05,848 INFO L87 Difference]: Start difference. First operand 95 states and 122 transitions. Second operand 11 states. [2020-10-14 23:24:06,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:06,212 INFO L93 Difference]: Finished difference Result 127 states and 160 transitions. [2020-10-14 23:24:06,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:24:06,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-10-14 23:24:06,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:06,214 INFO L225 Difference]: With dead ends: 127 [2020-10-14 23:24:06,214 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 23:24:06,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:24:06,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 23:24:06,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 105. [2020-10-14 23:24:06,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-10-14 23:24:06,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 133 transitions. [2020-10-14 23:24:06,229 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 133 transitions. Word has length 31 [2020-10-14 23:24:06,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:06,230 INFO L479 AbstractCegarLoop]: Abstraction has 105 states and 133 transitions. [2020-10-14 23:24:06,230 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:06,230 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 133 transitions. [2020-10-14 23:24:06,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:24:06,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:06,231 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:24:06,232 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:24:06,232 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:06,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:06,232 INFO L82 PathProgramCache]: Analyzing trace with hash 273106223, now seen corresponding path program 1 times [2020-10-14 23:24:06,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:06,233 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839818297] [2020-10-14 23:24:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:06,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:06,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:06,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:06,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:06,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:07,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:07,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:24:07,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:24:07,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-10-14 23:24:07,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:07,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:07,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:24:07,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-14 23:24:07,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-14 23:24:07,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:07,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:07,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:07,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:07,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:07,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:07,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:07,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:07,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:07,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:07,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:07,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:07,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:07,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:07,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:07,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839818297] [2020-10-14 23:24:07,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:07,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:24:07,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892274357] [2020-10-14 23:24:07,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:24:07,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:07,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:24:07,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:24:07,436 INFO L87 Difference]: Start difference. First operand 105 states and 133 transitions. Second operand 7 states. [2020-10-14 23:24:07,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:07,624 INFO L93 Difference]: Finished difference Result 141 states and 176 transitions. [2020-10-14 23:24:07,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:24:07,624 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-14 23:24:07,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:07,626 INFO L225 Difference]: With dead ends: 141 [2020-10-14 23:24:07,626 INFO L226 Difference]: Without dead ends: 123 [2020-10-14 23:24:07,627 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:07,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-10-14 23:24:07,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 110. [2020-10-14 23:24:07,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 23:24:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 140 transitions. [2020-10-14 23:24:07,638 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 140 transitions. Word has length 31 [2020-10-14 23:24:07,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:07,638 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 140 transitions. [2020-10-14 23:24:07,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:24:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 140 transitions. [2020-10-14 23:24:07,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:24:07,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:07,639 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:07,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-14 23:24:07,639 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:07,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:07,640 INFO L82 PathProgramCache]: Analyzing trace with hash 630287441, now seen corresponding path program 3 times [2020-10-14 23:24:07,640 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:07,640 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787484554] [2020-10-14 23:24:07,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:07,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:08,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:08,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-14 23:24:08,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:08,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-14 23:24:08,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:08,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-14 23:24:08,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:08,459 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 40 [2020-10-14 23:24:08,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:08,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:08,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:08,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:08,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:08,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:08,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:08,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:08,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:08,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:08,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:08,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:08,748 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787484554] [2020-10-14 23:24:08,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:08,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:24:08,748 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766838386] [2020-10-14 23:24:08,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:24:08,749 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:08,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:24:08,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:08,749 INFO L87 Difference]: Start difference. First operand 110 states and 140 transitions. Second operand 13 states. [2020-10-14 23:24:09,095 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 58 [2020-10-14 23:24:09,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:09,643 INFO L93 Difference]: Finished difference Result 149 states and 187 transitions. [2020-10-14 23:24:09,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:24:09,644 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 31 [2020-10-14 23:24:09,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:09,646 INFO L225 Difference]: With dead ends: 149 [2020-10-14 23:24:09,646 INFO L226 Difference]: Without dead ends: 138 [2020-10-14 23:24:09,647 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:24:09,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-14 23:24:09,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 110. [2020-10-14 23:24:09,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-14 23:24:09,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 139 transitions. [2020-10-14 23:24:09,661 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 139 transitions. Word has length 31 [2020-10-14 23:24:09,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:09,661 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 139 transitions. [2020-10-14 23:24:09,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:24:09,661 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 139 transitions. [2020-10-14 23:24:09,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:24:09,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:09,662 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:24:09,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-14 23:24:09,663 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:09,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:09,663 INFO L82 PathProgramCache]: Analyzing trace with hash 504129541, now seen corresponding path program 1 times [2020-10-14 23:24:09,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:09,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2016529292] [2020-10-14 23:24:09,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:09,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:09,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:09,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:09,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:09,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:09,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:10,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:10,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:10,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:11,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:11,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:11,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:12,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:12,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:12,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:12,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:13,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:13,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:13,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:24:13,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-14 23:24:13,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3739 [2020-10-14 23:24:13,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:13,418 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:24:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:13,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:24:13,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 23:24:13,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:13,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:13,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:13,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:13,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:13,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:13,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:13,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:13,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:13,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:13,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:13,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:13,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:13,580 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:13,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2016529292] [2020-10-14 23:24:13,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:13,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:13,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016689460] [2020-10-14 23:24:13,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:13,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:13,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:13,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:13,582 INFO L87 Difference]: Start difference. First operand 110 states and 139 transitions. Second operand 12 states. [2020-10-14 23:24:14,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:14,237 INFO L93 Difference]: Finished difference Result 161 states and 199 transitions. [2020-10-14 23:24:14,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:24:14,238 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 32 [2020-10-14 23:24:14,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:14,239 INFO L225 Difference]: With dead ends: 161 [2020-10-14 23:24:14,239 INFO L226 Difference]: Without dead ends: 150 [2020-10-14 23:24:14,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=646, Unknown=0, NotChecked=0, Total=756 [2020-10-14 23:24:14,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-14 23:24:14,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 115. [2020-10-14 23:24:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-14 23:24:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 144 transitions. [2020-10-14 23:24:14,251 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 144 transitions. Word has length 32 [2020-10-14 23:24:14,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:14,251 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 144 transitions. [2020-10-14 23:24:14,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:14,251 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 144 transitions. [2020-10-14 23:24:14,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:24:14,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:14,252 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:24:14,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-14 23:24:14,252 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:14,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:14,253 INFO L82 PathProgramCache]: Analyzing trace with hash 561387843, now seen corresponding path program 1 times [2020-10-14 23:24:14,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:14,253 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843645843] [2020-10-14 23:24:14,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:14,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:14,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:14,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:14,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:14,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:15,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:15,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:16,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:16,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:24:16,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 23:24:16,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2439 [2020-10-14 23:24:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:16,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:24:16,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:16,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:16,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:16,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:16,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:16,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:16,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:16,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:16,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:16,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:16,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:16,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:16,901 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:16,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843645843] [2020-10-14 23:24:16,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:16,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:16,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593067353] [2020-10-14 23:24:16,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:16,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:16,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:16,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:16,903 INFO L87 Difference]: Start difference. First operand 115 states and 144 transitions. Second operand 11 states. [2020-10-14 23:24:17,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:17,234 INFO L93 Difference]: Finished difference Result 143 states and 176 transitions. [2020-10-14 23:24:17,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:17,235 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-14 23:24:17,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:17,236 INFO L225 Difference]: With dead ends: 143 [2020-10-14 23:24:17,236 INFO L226 Difference]: Without dead ends: 108 [2020-10-14 23:24:17,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:24:17,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-14 23:24:17,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 104. [2020-10-14 23:24:17,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-14 23:24:17,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 128 transitions. [2020-10-14 23:24:17,246 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 128 transitions. Word has length 32 [2020-10-14 23:24:17,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:17,246 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 128 transitions. [2020-10-14 23:24:17,247 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:17,247 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 128 transitions. [2020-10-14 23:24:17,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:24:17,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:17,247 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:24:17,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-14 23:24:17,248 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:17,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:17,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1945173470, now seen corresponding path program 1 times [2020-10-14 23:24:17,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:17,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1541925319] [2020-10-14 23:24:17,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:17,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:17,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:17,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:17,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:17,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:17,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:17,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:18,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:18,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:18,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:24:18,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:24:18,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-14 23:24:18,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:18,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:18,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:24:18,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:18,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:24:18,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:18,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:18,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:18,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:18,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:18,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:18,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:18,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:18,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:18,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:18,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:18,731 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1541925319] [2020-10-14 23:24:18,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:18,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:24:18,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432982495] [2020-10-14 23:24:18,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:24:18,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:18,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:24:18,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:24:18,740 INFO L87 Difference]: Start difference. First operand 104 states and 128 transitions. Second operand 10 states. [2020-10-14 23:24:19,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:19,014 INFO L93 Difference]: Finished difference Result 137 states and 169 transitions. [2020-10-14 23:24:19,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:24:19,014 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 32 [2020-10-14 23:24:19,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:19,015 INFO L225 Difference]: With dead ends: 137 [2020-10-14 23:24:19,016 INFO L226 Difference]: Without dead ends: 117 [2020-10-14 23:24:19,017 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:19,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-14 23:24:19,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2020-10-14 23:24:19,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-14 23:24:19,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 137 transitions. [2020-10-14 23:24:19,027 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 137 transitions. Word has length 32 [2020-10-14 23:24:19,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:19,028 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 137 transitions. [2020-10-14 23:24:19,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:24:19,028 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 137 transitions. [2020-10-14 23:24:19,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:24:19,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:19,029 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:24:19,029 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-14 23:24:19,029 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:19,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:19,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1265115100, now seen corresponding path program 1 times [2020-10-14 23:24:19,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:19,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432025778] [2020-10-14 23:24:19,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:19,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:19,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:19,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:19,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:24:19,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:19,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-14 23:24:19,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:19,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:24:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:19,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:24:19,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:19,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:19,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:19,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:19,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:19,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:19,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:19,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:19,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:19,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:19,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:19,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:19,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:24:19,392 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432025778] [2020-10-14 23:24:19,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:19,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:24:19,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637871051] [2020-10-14 23:24:19,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:24:19,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:19,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:24:19,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:24:19,394 INFO L87 Difference]: Start difference. First operand 113 states and 137 transitions. Second operand 8 states. [2020-10-14 23:24:19,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:19,687 INFO L93 Difference]: Finished difference Result 139 states and 170 transitions. [2020-10-14 23:24:19,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 23:24:19,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2020-10-14 23:24:19,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:19,689 INFO L225 Difference]: With dead ends: 139 [2020-10-14 23:24:19,689 INFO L226 Difference]: Without dead ends: 118 [2020-10-14 23:24:19,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:19,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-14 23:24:19,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2020-10-14 23:24:19,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-14 23:24:19,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 141 transitions. [2020-10-14 23:24:19,700 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 141 transitions. Word has length 32 [2020-10-14 23:24:19,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:19,700 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 141 transitions. [2020-10-14 23:24:19,700 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:24:19,700 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 141 transitions. [2020-10-14 23:24:19,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-14 23:24:19,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:19,701 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:19,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-14 23:24:19,702 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:19,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:19,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1093981088, now seen corresponding path program 4 times [2020-10-14 23:24:19,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:19,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797871838] [2020-10-14 23:24:19,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:19,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:20,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:20,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:20,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-14 23:24:20,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-10-14 23:24:20,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:20,544 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:24:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:20,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-14 23:24:20,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:21,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:21,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:21,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:21,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:21,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:21,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:21,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:21,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:21,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:21,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:21,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:21,041 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:21,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797871838] [2020-10-14 23:24:21,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:21,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:24:21,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709766058] [2020-10-14 23:24:21,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:24:21,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:21,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:24:21,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:21,042 INFO L87 Difference]: Start difference. First operand 117 states and 141 transitions. Second operand 14 states. [2020-10-14 23:24:22,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:22,395 INFO L93 Difference]: Finished difference Result 185 states and 226 transitions. [2020-10-14 23:24:22,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:24:22,395 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 32 [2020-10-14 23:24:22,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:22,397 INFO L225 Difference]: With dead ends: 185 [2020-10-14 23:24:22,397 INFO L226 Difference]: Without dead ends: 175 [2020-10-14 23:24:22,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:24:22,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-14 23:24:22,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 131. [2020-10-14 23:24:22,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-14 23:24:22,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 159 transitions. [2020-10-14 23:24:22,408 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 159 transitions. Word has length 32 [2020-10-14 23:24:22,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:22,409 INFO L479 AbstractCegarLoop]: Abstraction has 131 states and 159 transitions. [2020-10-14 23:24:22,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:24:22,409 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 159 transitions. [2020-10-14 23:24:22,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:24:22,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:22,409 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:24:22,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-14 23:24:22,410 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:22,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:22,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1423988362, now seen corresponding path program 2 times [2020-10-14 23:24:22,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:22,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [377900688] [2020-10-14 23:24:22,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:22,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:22,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:22,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:22,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:23,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:23,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:23,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:24:23,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:24:23,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 821 [2020-10-14 23:24:23,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:23,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:24:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:23,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:24:23,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:23,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:23,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:23,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:23,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:23,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:23,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:23,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:23,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:23,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:23,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:23,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:23,388 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:23,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [377900688] [2020-10-14 23:24:23,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:23,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:24:23,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378868952] [2020-10-14 23:24:23,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:24:23,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:23,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:24:23,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:24:23,390 INFO L87 Difference]: Start difference. First operand 131 states and 159 transitions. Second operand 11 states. [2020-10-14 23:24:23,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:23,966 INFO L93 Difference]: Finished difference Result 193 states and 234 transitions. [2020-10-14 23:24:23,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:24:23,967 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-14 23:24:23,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:23,969 INFO L225 Difference]: With dead ends: 193 [2020-10-14 23:24:23,969 INFO L226 Difference]: Without dead ends: 169 [2020-10-14 23:24:23,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:23,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2020-10-14 23:24:23,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 132. [2020-10-14 23:24:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-14 23:24:23,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 159 transitions. [2020-10-14 23:24:23,983 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 159 transitions. Word has length 33 [2020-10-14 23:24:23,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:23,983 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 159 transitions. [2020-10-14 23:24:23,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:24:23,983 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 159 transitions. [2020-10-14 23:24:23,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:24:23,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:23,984 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:23,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-14 23:24:23,984 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:23,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:23,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1148499148, now seen corresponding path program 5 times [2020-10-14 23:24:23,985 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:23,985 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597223483] [2020-10-14 23:24:23,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:24,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:24,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:24,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-14 23:24:24,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 905 [2020-10-14 23:24:24,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:24,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:24:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:24:24,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:25,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:25,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:25,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:25,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:25,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:25,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:25,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:25,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:25,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:25,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:25,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:25,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597223483] [2020-10-14 23:24:25,566 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:25,566 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:24:25,566 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972623300] [2020-10-14 23:24:25,567 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:24:25,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:25,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:24:25,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:24:25,567 INFO L87 Difference]: Start difference. First operand 132 states and 159 transitions. Second operand 16 states. [2020-10-14 23:24:27,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:27,057 INFO L93 Difference]: Finished difference Result 227 states and 277 transitions. [2020-10-14 23:24:27,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:24:27,059 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2020-10-14 23:24:27,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:27,060 INFO L225 Difference]: With dead ends: 227 [2020-10-14 23:24:27,061 INFO L226 Difference]: Without dead ends: 218 [2020-10-14 23:24:27,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:24:27,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-14 23:24:27,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 134. [2020-10-14 23:24:27,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-14 23:24:27,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 162 transitions. [2020-10-14 23:24:27,083 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 162 transitions. Word has length 33 [2020-10-14 23:24:27,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:27,083 INFO L479 AbstractCegarLoop]: Abstraction has 134 states and 162 transitions. [2020-10-14 23:24:27,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:24:27,083 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 162 transitions. [2020-10-14 23:24:27,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:24:27,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:27,084 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:27,085 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-14 23:24:27,085 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:27,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:27,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1506177246, now seen corresponding path program 3 times [2020-10-14 23:24:27,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:27,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604761812] [2020-10-14 23:24:27,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:27,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:27,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:27,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:27,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:27,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:27,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:24:27,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:27,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 493 [2020-10-14 23:24:27,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:27,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:24:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:27,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:24:27,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:28,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:28,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:28,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:28,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:28,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:28,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:28,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:28,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:28,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:28,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:28,139 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:28,139 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604761812] [2020-10-14 23:24:28,139 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:28,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:24:28,140 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430503989] [2020-10-14 23:24:28,140 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:24:28,140 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:28,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:24:28,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:24:28,141 INFO L87 Difference]: Start difference. First operand 134 states and 162 transitions. Second operand 15 states. [2020-10-14 23:24:29,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:29,204 INFO L93 Difference]: Finished difference Result 168 states and 202 transitions. [2020-10-14 23:24:29,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:24:29,205 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-10-14 23:24:29,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:29,206 INFO L225 Difference]: With dead ends: 168 [2020-10-14 23:24:29,206 INFO L226 Difference]: Without dead ends: 166 [2020-10-14 23:24:29,207 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=79, Invalid=521, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:24:29,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-14 23:24:29,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 142. [2020-10-14 23:24:29,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 23:24:29,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 172 transitions. [2020-10-14 23:24:29,221 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 172 transitions. Word has length 34 [2020-10-14 23:24:29,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:29,221 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 172 transitions. [2020-10-14 23:24:29,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:24:29,222 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 172 transitions. [2020-10-14 23:24:29,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:24:29,222 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:29,223 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:29,223 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-14 23:24:29,223 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:29,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:29,223 INFO L82 PathProgramCache]: Analyzing trace with hash -1506175324, now seen corresponding path program 1 times [2020-10-14 23:24:29,224 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:29,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324860124] [2020-10-14 23:24:29,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:29,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:29,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:29,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:29,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:24:29,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:24:29,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 544 [2020-10-14 23:24:29,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:29,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:29,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:24:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:29,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:24:29,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:30,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:30,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:30,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:30,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:30,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:30,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:30,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:30,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:30,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:30,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:30,210 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:30,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324860124] [2020-10-14 23:24:30,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:30,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:24:30,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999080168] [2020-10-14 23:24:30,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:24:30,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:30,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:24:30,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:30,212 INFO L87 Difference]: Start difference. First operand 142 states and 172 transitions. Second operand 14 states. [2020-10-14 23:24:31,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:31,158 INFO L93 Difference]: Finished difference Result 201 states and 244 transitions. [2020-10-14 23:24:31,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:24:31,159 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-14 23:24:31,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:31,160 INFO L225 Difference]: With dead ends: 201 [2020-10-14 23:24:31,160 INFO L226 Difference]: Without dead ends: 192 [2020-10-14 23:24:31,162 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=82, Invalid=470, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:24:31,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2020-10-14 23:24:31,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 142. [2020-10-14 23:24:31,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-14 23:24:31,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 171 transitions. [2020-10-14 23:24:31,178 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 171 transitions. Word has length 34 [2020-10-14 23:24:31,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:31,178 INFO L479 AbstractCegarLoop]: Abstraction has 142 states and 171 transitions. [2020-10-14 23:24:31,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:24:31,178 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 171 transitions. [2020-10-14 23:24:31,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:24:31,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:31,179 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:24:31,179 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-14 23:24:31,179 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:31,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:31,180 INFO L82 PathProgramCache]: Analyzing trace with hash -2142266326, now seen corresponding path program 1 times [2020-10-14 23:24:31,180 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:31,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1948846138] [2020-10-14 23:24:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:31,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:31,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:31,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:31,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:31,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:32,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:32,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:33,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:33,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:24:33,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:24:33,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1826 [2020-10-14 23:24:33,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:33,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:33,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:33,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:33,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:24:33,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:33,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:33,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:33,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:33,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:33,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:33,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:33,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:33,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:33,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:33,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:33,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:33,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:33,232 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:33,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1948846138] [2020-10-14 23:24:33,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:33,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:33,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325099167] [2020-10-14 23:24:33,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:33,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:33,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:33,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:33,234 INFO L87 Difference]: Start difference. First operand 142 states and 171 transitions. Second operand 12 states. [2020-10-14 23:24:33,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:33,536 INFO L93 Difference]: Finished difference Result 158 states and 191 transitions. [2020-10-14 23:24:33,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:33,536 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-14 23:24:33,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:33,538 INFO L225 Difference]: With dead ends: 158 [2020-10-14 23:24:33,538 INFO L226 Difference]: Without dead ends: 127 [2020-10-14 23:24:33,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:24:33,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-14 23:24:33,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 122. [2020-10-14 23:24:33,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-14 23:24:33,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 148 transitions. [2020-10-14 23:24:33,551 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 148 transitions. Word has length 34 [2020-10-14 23:24:33,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:33,551 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 148 transitions. [2020-10-14 23:24:33,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:33,551 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 148 transitions. [2020-10-14 23:24:33,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:24:33,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:33,552 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:33,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-14 23:24:33,552 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:33,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:33,553 INFO L82 PathProgramCache]: Analyzing trace with hash 1914545929, now seen corresponding path program 2 times [2020-10-14 23:24:33,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:33,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531386252] [2020-10-14 23:24:33,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:33,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:33,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:33,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:33,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:34,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:34,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:24:34,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:34,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 799 [2020-10-14 23:24:34,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:34,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:24:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:34,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:24:34,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:34,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:34,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:34,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:34,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:34,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:34,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:24:34,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:34,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:34,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:34,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:34,622 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:34,622 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531386252] [2020-10-14 23:24:34,622 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:34,623 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:34,623 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975733836] [2020-10-14 23:24:34,624 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:34,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:34,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:34,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:34,625 INFO L87 Difference]: Start difference. First operand 122 states and 148 transitions. Second operand 12 states. [2020-10-14 23:24:35,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:35,149 INFO L93 Difference]: Finished difference Result 165 states and 201 transitions. [2020-10-14 23:24:35,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 23:24:35,150 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-14 23:24:35,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:35,151 INFO L225 Difference]: With dead ends: 165 [2020-10-14 23:24:35,151 INFO L226 Difference]: Without dead ends: 149 [2020-10-14 23:24:35,152 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=297, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:24:35,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-14 23:24:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 133. [2020-10-14 23:24:35,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 133 states. [2020-10-14 23:24:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 162 transitions. [2020-10-14 23:24:35,165 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 162 transitions. Word has length 34 [2020-10-14 23:24:35,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:35,166 INFO L479 AbstractCegarLoop]: Abstraction has 133 states and 162 transitions. [2020-10-14 23:24:35,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:35,166 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 162 transitions. [2020-10-14 23:24:35,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:24:35,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:35,167 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:35,167 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-14 23:24:35,167 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:35,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:35,168 INFO L82 PathProgramCache]: Analyzing trace with hash -1456408288, now seen corresponding path program 6 times [2020-10-14 23:24:35,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:35,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [905764600] [2020-10-14 23:24:35,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:35,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:35,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:35,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:24:35,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:35,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 540 [2020-10-14 23:24:35,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:35,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:24:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:35,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:24:35,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:36,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:36,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:36,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:36,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:36,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:36,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:36,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:36,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:36,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:36,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:36,354 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:36,355 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [905764600] [2020-10-14 23:24:36,355 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:36,355 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:24:36,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92749798] [2020-10-14 23:24:36,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:24:36,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:36,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:24:36,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:24:36,356 INFO L87 Difference]: Start difference. First operand 133 states and 162 transitions. Second operand 15 states. [2020-10-14 23:24:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:37,937 INFO L93 Difference]: Finished difference Result 223 states and 276 transitions. [2020-10-14 23:24:37,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:24:37,938 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-10-14 23:24:37,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:37,939 INFO L225 Difference]: With dead ends: 223 [2020-10-14 23:24:37,939 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 23:24:37,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:24:37,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 23:24:37,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 147. [2020-10-14 23:24:37,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-14 23:24:37,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 180 transitions. [2020-10-14 23:24:37,957 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 180 transitions. Word has length 34 [2020-10-14 23:24:37,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:37,958 INFO L479 AbstractCegarLoop]: Abstraction has 147 states and 180 transitions. [2020-10-14 23:24:37,958 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:24:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 180 transitions. [2020-10-14 23:24:37,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-14 23:24:37,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:37,959 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:37,959 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-14 23:24:37,959 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:37,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:37,959 INFO L82 PathProgramCache]: Analyzing trace with hash -21325179, now seen corresponding path program 7 times [2020-10-14 23:24:37,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:37,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [908815356] [2020-10-14 23:24:37,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:37,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:38,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:38,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:39,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:39,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-14 23:24:39,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1207 [2020-10-14 23:24:39,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:39,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:24:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:39,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:24:39,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:39,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:39,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:39,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:39,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:39,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:39,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:39,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:39,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:39,825 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:39,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [908815356] [2020-10-14 23:24:39,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:39,826 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:24:39,826 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120882220] [2020-10-14 23:24:39,826 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:24:39,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:39,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:24:39,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:24:39,827 INFO L87 Difference]: Start difference. First operand 147 states and 180 transitions. Second operand 14 states. [2020-10-14 23:24:41,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:41,257 INFO L93 Difference]: Finished difference Result 204 states and 249 transitions. [2020-10-14 23:24:41,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:24:41,257 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-10-14 23:24:41,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:41,259 INFO L225 Difference]: With dead ends: 204 [2020-10-14 23:24:41,259 INFO L226 Difference]: Without dead ends: 194 [2020-10-14 23:24:41,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=115, Invalid=697, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:24:41,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-14 23:24:41,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 153. [2020-10-14 23:24:41,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 23:24:41,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 188 transitions. [2020-10-14 23:24:41,276 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 188 transitions. Word has length 34 [2020-10-14 23:24:41,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:41,276 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 188 transitions. [2020-10-14 23:24:41,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:24:41,276 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 188 transitions. [2020-10-14 23:24:41,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:24:41,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:41,277 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 23:24:41,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-14 23:24:41,278 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:41,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:41,278 INFO L82 PathProgramCache]: Analyzing trace with hash -2146997878, now seen corresponding path program 4 times [2020-10-14 23:24:41,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:41,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1074778067] [2020-10-14 23:24:41,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:41,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:41,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:41,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:41,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:41,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:41,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:24:41,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:41,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 598 [2020-10-14 23:24:41,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:41,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:41,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-14 23:24:41,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:42,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:42,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:42,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:42,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:42,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:42,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:42,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:42,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:42,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:42,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:24:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:42,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1074778067] [2020-10-14 23:24:42,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:42,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:42,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791651090] [2020-10-14 23:24:42,147 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:42,147 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:42,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:42,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:42,148 INFO L87 Difference]: Start difference. First operand 153 states and 188 transitions. Second operand 12 states. [2020-10-14 23:24:42,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:42,758 INFO L93 Difference]: Finished difference Result 174 states and 213 transitions. [2020-10-14 23:24:42,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:24:42,758 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-14 23:24:42,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:42,759 INFO L225 Difference]: With dead ends: 174 [2020-10-14 23:24:42,760 INFO L226 Difference]: Without dead ends: 163 [2020-10-14 23:24:42,760 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:24:42,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-14 23:24:42,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 153. [2020-10-14 23:24:42,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-10-14 23:24:42,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 187 transitions. [2020-10-14 23:24:42,774 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 187 transitions. Word has length 35 [2020-10-14 23:24:42,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:42,774 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 187 transitions. [2020-10-14 23:24:42,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:42,775 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 187 transitions. [2020-10-14 23:24:42,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:24:42,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:42,775 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-14 23:24:42,776 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-14 23:24:42,776 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:42,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:42,776 INFO L82 PathProgramCache]: Analyzing trace with hash 816205443, now seen corresponding path program 3 times [2020-10-14 23:24:42,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:42,777 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1509859572] [2020-10-14 23:24:42,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:42,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:43,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:24:43,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 806 [2020-10-14 23:24:43,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:43,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:43,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:24:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:43,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:43,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:43,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:43,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:43,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:43,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:43,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:43,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:43,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:43,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:43,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:43,785 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:43,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1509859572] [2020-10-14 23:24:43,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:43,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:24:43,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889954453] [2020-10-14 23:24:43,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:24:43,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:43,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:24:43,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:43,787 INFO L87 Difference]: Start difference. First operand 153 states and 187 transitions. Second operand 12 states. [2020-10-14 23:24:44,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:44,286 INFO L93 Difference]: Finished difference Result 180 states and 219 transitions. [2020-10-14 23:24:44,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:24:44,286 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-10-14 23:24:44,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:44,287 INFO L225 Difference]: With dead ends: 180 [2020-10-14 23:24:44,287 INFO L226 Difference]: Without dead ends: 170 [2020-10-14 23:24:44,289 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:24:44,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-14 23:24:44,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 152. [2020-10-14 23:24:44,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-14 23:24:44,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 186 transitions. [2020-10-14 23:24:44,307 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 186 transitions. Word has length 35 [2020-10-14 23:24:44,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:44,308 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 186 transitions. [2020-10-14 23:24:44,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:24:44,308 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 186 transitions. [2020-10-14 23:24:44,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:24:44,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:44,309 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:44,309 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-14 23:24:44,309 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:44,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:44,310 INFO L82 PathProgramCache]: Analyzing trace with hash 933743239, now seen corresponding path program 8 times [2020-10-14 23:24:44,310 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:44,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559744937] [2020-10-14 23:24:44,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:44,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:44,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:45,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:45,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:45,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-14 23:24:45,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:45,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1430 [2020-10-14 23:24:45,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:45,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:24:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:45,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-14 23:24:45,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:46,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:46,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:46,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:46,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:46,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:46,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:46,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:46,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:46,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:46,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:46,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:46,339 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:46,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559744937] [2020-10-14 23:24:46,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:46,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:24:46,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717336907] [2020-10-14 23:24:46,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:24:46,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:46,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:24:46,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:24:46,341 INFO L87 Difference]: Start difference. First operand 152 states and 186 transitions. Second operand 16 states. [2020-10-14 23:24:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:48,085 INFO L93 Difference]: Finished difference Result 248 states and 303 transitions. [2020-10-14 23:24:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:24:48,086 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 35 [2020-10-14 23:24:48,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:48,087 INFO L225 Difference]: With dead ends: 248 [2020-10-14 23:24:48,087 INFO L226 Difference]: Without dead ends: 238 [2020-10-14 23:24:48,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:24:48,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-14 23:24:48,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 164. [2020-10-14 23:24:48,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-14 23:24:48,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 201 transitions. [2020-10-14 23:24:48,102 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 201 transitions. Word has length 35 [2020-10-14 23:24:48,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:48,102 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 201 transitions. [2020-10-14 23:24:48,102 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:24:48,102 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 201 transitions. [2020-10-14 23:24:48,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:24:48,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:48,103 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:48,103 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-14 23:24:48,103 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:48,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:48,104 INFO L82 PathProgramCache]: Analyzing trace with hash 426324167, now seen corresponding path program 5 times [2020-10-14 23:24:48,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:48,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426056145] [2020-10-14 23:24:48,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:48,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:48,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:48,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:48,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:24:48,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:48,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 425 [2020-10-14 23:24:48,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:48,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:48,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:24:48,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:48,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:24:48,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:48,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:48,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:48,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:48,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:48,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:48,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:48,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:48,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:48,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:48,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:48,673 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:24:48,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426056145] [2020-10-14 23:24:48,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:48,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:24:48,674 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807562684] [2020-10-14 23:24:48,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:24:48,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:48,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:24:48,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:24:48,675 INFO L87 Difference]: Start difference. First operand 164 states and 201 transitions. Second operand 9 states. [2020-10-14 23:24:48,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:48,969 INFO L93 Difference]: Finished difference Result 188 states and 229 transitions. [2020-10-14 23:24:48,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:24:48,970 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-10-14 23:24:48,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:48,971 INFO L225 Difference]: With dead ends: 188 [2020-10-14 23:24:48,971 INFO L226 Difference]: Without dead ends: 173 [2020-10-14 23:24:48,971 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:24:48,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-14 23:24:48,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 164. [2020-10-14 23:24:48,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-14 23:24:48,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 200 transitions. [2020-10-14 23:24:48,986 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 200 transitions. Word has length 36 [2020-10-14 23:24:48,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:48,986 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 200 transitions. [2020-10-14 23:24:48,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:24:48,987 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 200 transitions. [2020-10-14 23:24:48,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:24:48,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:48,987 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:48,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-14 23:24:48,988 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:48,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:48,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1127388745, now seen corresponding path program 4 times [2020-10-14 23:24:48,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:48,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181109425] [2020-10-14 23:24:48,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:49,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:49,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:49,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:49,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:24:49,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:49,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-14 23:24:49,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:49,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:24:49,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:49,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:24:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:50,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:50,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:50,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:50,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:50,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:50,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:50,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:50,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:50,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181109425] [2020-10-14 23:24:50,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:50,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:24:50,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455892891] [2020-10-14 23:24:50,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:24:50,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:50,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:24:50,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:24:50,061 INFO L87 Difference]: Start difference. First operand 164 states and 200 transitions. Second operand 16 states. [2020-10-14 23:24:50,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:50,932 INFO L93 Difference]: Finished difference Result 209 states and 252 transitions. [2020-10-14 23:24:50,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:24:50,932 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 36 [2020-10-14 23:24:50,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:50,934 INFO L225 Difference]: With dead ends: 209 [2020-10-14 23:24:50,934 INFO L226 Difference]: Without dead ends: 207 [2020-10-14 23:24:50,935 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=68, Invalid=484, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:24:50,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-14 23:24:50,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 172. [2020-10-14 23:24:50,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 23:24:50,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 210 transitions. [2020-10-14 23:24:50,954 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 210 transitions. Word has length 36 [2020-10-14 23:24:50,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:50,955 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 210 transitions. [2020-10-14 23:24:50,955 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:24:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 210 transitions. [2020-10-14 23:24:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:24:50,956 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:50,956 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:50,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-14 23:24:50,956 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:50,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:50,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1127390667, now seen corresponding path program 1 times [2020-10-14 23:24:50,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:50,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051352458] [2020-10-14 23:24:50,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:50,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:51,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:51,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:51,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:24:51,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:51,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 364 [2020-10-14 23:24:51,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:51,331 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:51,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:24:51,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:51,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:24:51,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:51,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:51,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:51,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:51,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:51,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:51,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:51,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:51,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:51,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:51,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:51,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:51,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:51,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:51,849 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:51,851 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051352458] [2020-10-14 23:24:51,851 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:51,851 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:24:51,852 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159540974] [2020-10-14 23:24:51,852 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:24:51,852 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:51,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:24:51,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:24:51,853 INFO L87 Difference]: Start difference. First operand 172 states and 210 transitions. Second operand 15 states. [2020-10-14 23:24:52,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:52,772 INFO L93 Difference]: Finished difference Result 225 states and 274 transitions. [2020-10-14 23:24:52,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:24:52,772 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-14 23:24:52,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:52,774 INFO L225 Difference]: With dead ends: 225 [2020-10-14 23:24:52,774 INFO L226 Difference]: Without dead ends: 216 [2020-10-14 23:24:52,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=68, Invalid=394, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:24:52,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-14 23:24:52,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 169. [2020-10-14 23:24:52,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 23:24:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 206 transitions. [2020-10-14 23:24:52,795 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 206 transitions. Word has length 36 [2020-10-14 23:24:52,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:52,795 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 206 transitions. [2020-10-14 23:24:52,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:24:52,795 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 206 transitions. [2020-10-14 23:24:52,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:24:52,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:52,796 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:52,796 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-14 23:24:52,796 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:52,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:52,797 INFO L82 PathProgramCache]: Analyzing trace with hash -447919954, now seen corresponding path program 5 times [2020-10-14 23:24:52,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:52,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382632842] [2020-10-14 23:24:52,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:52,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:52,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:53,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:53,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:53,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:53,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:24:53,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:24:53,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 814 [2020-10-14 23:24:53,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:53,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:24:53,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:53,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:24:53,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:53,833 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-10-14 23:24:54,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:54,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:54,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:54,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:54,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:54,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:54,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:54,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:54,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:54,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:54,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:54,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:54,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:54,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:54,066 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382632842] [2020-10-14 23:24:54,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:54,067 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:24:54,067 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086799843] [2020-10-14 23:24:54,067 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:24:54,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:54,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:24:54,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:24:54,068 INFO L87 Difference]: Start difference. First operand 169 states and 206 transitions. Second operand 13 states. [2020-10-14 23:24:54,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:24:54,671 INFO L93 Difference]: Finished difference Result 192 states and 233 transitions. [2020-10-14 23:24:54,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:24:54,671 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 36 [2020-10-14 23:24:54,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:24:54,673 INFO L225 Difference]: With dead ends: 192 [2020-10-14 23:24:54,673 INFO L226 Difference]: Without dead ends: 176 [2020-10-14 23:24:54,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:24:54,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-14 23:24:54,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 169. [2020-10-14 23:24:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 23:24:54,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 205 transitions. [2020-10-14 23:24:54,699 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 205 transitions. Word has length 36 [2020-10-14 23:24:54,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:24:54,699 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 205 transitions. [2020-10-14 23:24:54,699 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:24:54,699 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 205 transitions. [2020-10-14 23:24:54,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-14 23:24:54,700 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:24:54,701 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:24:54,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-14 23:24:54,701 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:24:54,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:24:54,702 INFO L82 PathProgramCache]: Analyzing trace with hash 476093125, now seen corresponding path program 9 times [2020-10-14 23:24:54,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:24:54,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220225066] [2020-10-14 23:24:54,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:24:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:54,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:55,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:56,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:56,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-14 23:24:56,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:24:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1624 [2020-10-14 23:24:56,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:56,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:24:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:24:56,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:24:56,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:57,060 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 60 [2020-10-14 23:24:57,293 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 63 [2020-10-14 23:24:57,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:24:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:24:57,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:24:57,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:24:57,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:24:57,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:24:57,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:24:57,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:24:57,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:24:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:24:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:24:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:24:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:24:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:24:57,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220225066] [2020-10-14 23:24:57,876 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:24:57,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:24:57,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311377997] [2020-10-14 23:24:57,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:24:57,877 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:24:57,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:24:57,877 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:24:57,877 INFO L87 Difference]: Start difference. First operand 169 states and 205 transitions. Second operand 19 states. [2020-10-14 23:24:58,632 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2020-10-14 23:24:58,933 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 61 [2020-10-14 23:24:59,329 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-14 23:24:59,682 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 92 [2020-10-14 23:25:00,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:00,174 INFO L93 Difference]: Finished difference Result 220 states and 268 transitions. [2020-10-14 23:25:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:25:00,175 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 36 [2020-10-14 23:25:00,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:00,177 INFO L225 Difference]: With dead ends: 220 [2020-10-14 23:25:00,177 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 23:25:00,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=114, Invalid=816, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:25:00,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 23:25:00,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 174. [2020-10-14 23:25:00,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 23:25:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 211 transitions. [2020-10-14 23:25:00,200 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 211 transitions. Word has length 36 [2020-10-14 23:25:00,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:00,200 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 211 transitions. [2020-10-14 23:25:00,200 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:25:00,200 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 211 transitions. [2020-10-14 23:25:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:25:00,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:00,201 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:00,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-14 23:25:00,202 INFO L427 AbstractCegarLoop]: === Iteration 37 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:00,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:00,202 INFO L82 PathProgramCache]: Analyzing trace with hash -2110830781, now seen corresponding path program 6 times [2020-10-14 23:25:00,202 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:00,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400588729] [2020-10-14 23:25:00,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:00,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:00,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:00,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:25:00,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:00,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-14 23:25:00,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:00,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:00,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:00,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:25:00,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:00,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:00,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:00,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:00,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:00,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:00,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:00,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:00,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:00,891 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:00,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:00,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:00,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400588729] [2020-10-14 23:25:00,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:00,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:00,901 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077808622] [2020-10-14 23:25:00,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:00,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:00,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:00,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:00,902 INFO L87 Difference]: Start difference. First operand 174 states and 211 transitions. Second operand 14 states. [2020-10-14 23:25:01,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:01,653 INFO L93 Difference]: Finished difference Result 200 states and 242 transitions. [2020-10-14 23:25:01,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 23:25:01,654 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-14 23:25:01,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:01,656 INFO L225 Difference]: With dead ends: 200 [2020-10-14 23:25:01,656 INFO L226 Difference]: Without dead ends: 189 [2020-10-14 23:25:01,656 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:25:01,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-14 23:25:01,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 169. [2020-10-14 23:25:01,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169 states. [2020-10-14 23:25:01,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 205 transitions. [2020-10-14 23:25:01,679 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 205 transitions. Word has length 37 [2020-10-14 23:25:01,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:01,679 INFO L479 AbstractCegarLoop]: Abstraction has 169 states and 205 transitions. [2020-10-14 23:25:01,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:01,679 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 205 transitions. [2020-10-14 23:25:01,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:25:01,680 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:01,680 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:01,680 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-14 23:25:01,680 INFO L427 AbstractCegarLoop]: === Iteration 38 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:01,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:01,680 INFO L82 PathProgramCache]: Analyzing trace with hash -1271936219, now seen corresponding path program 1 times [2020-10-14 23:25:01,681 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:01,681 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618010284] [2020-10-14 23:25:01,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:01,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:01,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:01,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:02,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:02,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:03,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:03,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:25:03,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:25:03,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1593 [2020-10-14 23:25:03,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:03,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:03,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:25:03,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:03,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:25:03,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:03,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:03,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:03,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:03,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:03,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:03,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:03,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:03,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:03,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:03,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:03,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:03,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618010284] [2020-10-14 23:25:03,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:03,887 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:03,887 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939686245] [2020-10-14 23:25:03,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:03,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:03,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:03,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:03,888 INFO L87 Difference]: Start difference. First operand 169 states and 205 transitions. Second operand 14 states. [2020-10-14 23:25:04,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:04,929 INFO L93 Difference]: Finished difference Result 208 states and 250 transitions. [2020-10-14 23:25:04,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:25:04,930 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-14 23:25:04,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:04,931 INFO L225 Difference]: With dead ends: 208 [2020-10-14 23:25:04,931 INFO L226 Difference]: Without dead ends: 199 [2020-10-14 23:25:04,932 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:25:04,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-14 23:25:04,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 180. [2020-10-14 23:25:04,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-14 23:25:04,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 216 transitions. [2020-10-14 23:25:04,953 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 216 transitions. Word has length 37 [2020-10-14 23:25:04,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:04,953 INFO L479 AbstractCegarLoop]: Abstraction has 180 states and 216 transitions. [2020-10-14 23:25:04,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:04,953 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 216 transitions. [2020-10-14 23:25:04,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:25:04,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:04,954 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:04,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-14 23:25:04,954 INFO L427 AbstractCegarLoop]: === Iteration 39 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:04,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:04,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1214677917, now seen corresponding path program 1 times [2020-10-14 23:25:04,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:04,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205658944] [2020-10-14 23:25:04,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:04,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:05,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:05,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:25:05,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:05,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-14 23:25:05,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:05,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:05,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:25:05,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:05,682 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 48 [2020-10-14 23:25:05,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:05,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:05,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:05,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:05,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:05,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:06,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:06,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:06,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:06,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:06,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:06,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:06,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:06,008 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:06,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205658944] [2020-10-14 23:25:06,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:06,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:25:06,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250258768] [2020-10-14 23:25:06,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:06,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:06,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:06,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:06,009 INFO L87 Difference]: Start difference. First operand 180 states and 216 transitions. Second operand 16 states. [2020-10-14 23:25:07,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:07,179 INFO L93 Difference]: Finished difference Result 219 states and 261 transitions. [2020-10-14 23:25:07,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:25:07,180 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-14 23:25:07,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:07,182 INFO L225 Difference]: With dead ends: 219 [2020-10-14 23:25:07,182 INFO L226 Difference]: Without dead ends: 217 [2020-10-14 23:25:07,182 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=86, Invalid=564, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:25:07,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-14 23:25:07,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 183. [2020-10-14 23:25:07,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-14 23:25:07,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 220 transitions. [2020-10-14 23:25:07,206 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 220 transitions. Word has length 37 [2020-10-14 23:25:07,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:07,207 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 220 transitions. [2020-10-14 23:25:07,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:25:07,207 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 220 transitions. [2020-10-14 23:25:07,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:25:07,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:07,208 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:07,208 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-14 23:25:07,208 INFO L427 AbstractCegarLoop]: === Iteration 40 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:07,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:07,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1214675995, now seen corresponding path program 1 times [2020-10-14 23:25:07,208 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:07,209 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720512192] [2020-10-14 23:25:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:07,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:07,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:07,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:07,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:25:07,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:07,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 382 [2020-10-14 23:25:07,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:07,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:07,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:07,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:07,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:25:07,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:07,920 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 36 [2020-10-14 23:25:08,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:08,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:08,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:08,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:08,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:08,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:08,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:08,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:08,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:08,191 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:08,191 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720512192] [2020-10-14 23:25:08,191 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:08,191 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:25:08,191 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951476652] [2020-10-14 23:25:08,191 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:08,191 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:08,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:08,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:08,192 INFO L87 Difference]: Start difference. First operand 183 states and 220 transitions. Second operand 16 states. [2020-10-14 23:25:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:09,500 INFO L93 Difference]: Finished difference Result 228 states and 275 transitions. [2020-10-14 23:25:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:25:09,501 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-14 23:25:09,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:09,502 INFO L225 Difference]: With dead ends: 228 [2020-10-14 23:25:09,502 INFO L226 Difference]: Without dead ends: 219 [2020-10-14 23:25:09,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=105, Invalid=707, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:25:09,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-10-14 23:25:09,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 181. [2020-10-14 23:25:09,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-10-14 23:25:09,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 217 transitions. [2020-10-14 23:25:09,525 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 217 transitions. Word has length 37 [2020-10-14 23:25:09,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:09,525 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 217 transitions. [2020-10-14 23:25:09,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:25:09,526 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 217 transitions. [2020-10-14 23:25:09,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:25:09,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:09,526 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:09,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-14 23:25:09,527 INFO L427 AbstractCegarLoop]: === Iteration 41 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:09,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:09,527 INFO L82 PathProgramCache]: Analyzing trace with hash 594207102, now seen corresponding path program 7 times [2020-10-14 23:25:09,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:09,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772426114] [2020-10-14 23:25:09,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:09,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:10,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:10,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:10,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:25:10,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:10,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 597 [2020-10-14 23:25:10,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:10,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:25:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:10,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:25:10,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:10,775 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 26 [2020-10-14 23:25:11,159 WARN L193 SmtUtils]: Spent 358.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 62 [2020-10-14 23:25:11,387 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 30 [2020-10-14 23:25:11,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:11,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:11,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:11,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:11,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:11,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:11,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:11,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:11,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:11,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:11,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:11,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:11,487 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:11,488 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772426114] [2020-10-14 23:25:11,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:11,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:25:11,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658282968] [2020-10-14 23:25:11,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:25:11,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:11,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:25:11,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:25:11,489 INFO L87 Difference]: Start difference. First operand 181 states and 217 transitions. Second operand 14 states. [2020-10-14 23:25:11,898 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2020-10-14 23:25:12,980 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2020-10-14 23:25:13,407 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 53 [2020-10-14 23:25:14,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:14,054 INFO L93 Difference]: Finished difference Result 210 states and 249 transitions. [2020-10-14 23:25:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-14 23:25:14,055 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 37 [2020-10-14 23:25:14,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:14,056 INFO L225 Difference]: With dead ends: 210 [2020-10-14 23:25:14,056 INFO L226 Difference]: Without dead ends: 200 [2020-10-14 23:25:14,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=234, Invalid=1098, Unknown=0, NotChecked=0, Total=1332 [2020-10-14 23:25:14,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-14 23:25:14,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 177. [2020-10-14 23:25:14,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-14 23:25:14,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 212 transitions. [2020-10-14 23:25:14,077 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 212 transitions. Word has length 37 [2020-10-14 23:25:14,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:14,077 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 212 transitions. [2020-10-14 23:25:14,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:25:14,077 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 212 transitions. [2020-10-14 23:25:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:25:14,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:14,078 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:14,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-14 23:25:14,078 INFO L427 AbstractCegarLoop]: === Iteration 42 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:14,079 INFO L82 PathProgramCache]: Analyzing trace with hash -826158521, now seen corresponding path program 10 times [2020-10-14 23:25:14,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:14,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1859073978] [2020-10-14 23:25:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:14,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:14,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:14,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:25:14,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:14,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 878 [2020-10-14 23:25:14,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:14,987 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:25:14,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-14 23:25:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:15,485 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 56 [2020-10-14 23:25:15,660 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 60 [2020-10-14 23:25:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:16,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:16,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:16,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:16,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:16,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:16,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:16,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:16,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:16,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:16,035 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 6 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:16,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1859073978] [2020-10-14 23:25:16,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:16,035 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:25:16,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910005275] [2020-10-14 23:25:16,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:25:16,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:16,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:25:16,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:16,036 INFO L87 Difference]: Start difference. First operand 177 states and 212 transitions. Second operand 17 states. [2020-10-14 23:25:17,075 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 62 [2020-10-14 23:25:17,657 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 65 [2020-10-14 23:25:18,013 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 172 DAG size of output: 104 [2020-10-14 23:25:18,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:18,392 INFO L93 Difference]: Finished difference Result 222 states and 267 transitions. [2020-10-14 23:25:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:25:18,393 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-10-14 23:25:18,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:18,394 INFO L225 Difference]: With dead ends: 222 [2020-10-14 23:25:18,395 INFO L226 Difference]: Without dead ends: 211 [2020-10-14 23:25:18,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=88, Invalid=614, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:25:18,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2020-10-14 23:25:18,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 172. [2020-10-14 23:25:18,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-14 23:25:18,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 206 transitions. [2020-10-14 23:25:18,415 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 206 transitions. Word has length 37 [2020-10-14 23:25:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:18,415 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 206 transitions. [2020-10-14 23:25:18,415 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:25:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 206 transitions. [2020-10-14 23:25:18,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:25:18,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:18,416 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:18,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-14 23:25:18,417 INFO L427 AbstractCegarLoop]: === Iteration 43 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:18,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:18,417 INFO L82 PathProgramCache]: Analyzing trace with hash 711744898, now seen corresponding path program 11 times [2020-10-14 23:25:18,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:18,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [205045124] [2020-10-14 23:25:18,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:18,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:19,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:20,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:20,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-14 23:25:20,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:20,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1563 [2020-10-14 23:25:20,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:20,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:25:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:20,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:25:20,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:20,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:20,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:20,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:20,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:20,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:20,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:20,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:20,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:20,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:20,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:20,759 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:20,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [205045124] [2020-10-14 23:25:20,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:20,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:25:20,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136551420] [2020-10-14 23:25:20,760 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:20,760 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:20,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:20,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:20,760 INFO L87 Difference]: Start difference. First operand 172 states and 206 transitions. Second operand 16 states. [2020-10-14 23:25:22,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:22,903 INFO L93 Difference]: Finished difference Result 236 states and 283 transitions. [2020-10-14 23:25:22,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:25:22,904 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-14 23:25:22,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:22,905 INFO L225 Difference]: With dead ends: 236 [2020-10-14 23:25:22,905 INFO L226 Difference]: Without dead ends: 226 [2020-10-14 23:25:22,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=142, Invalid=1048, Unknown=0, NotChecked=0, Total=1190 [2020-10-14 23:25:22,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-10-14 23:25:22,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 174. [2020-10-14 23:25:22,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-14 23:25:22,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 208 transitions. [2020-10-14 23:25:22,927 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 208 transitions. Word has length 37 [2020-10-14 23:25:22,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:22,927 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 208 transitions. [2020-10-14 23:25:22,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:25:22,927 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 208 transitions. [2020-10-14 23:25:22,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:25:22,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:22,928 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:22,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-14 23:25:22,929 INFO L427 AbstractCegarLoop]: === Iteration 44 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:22,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:22,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2134310188, now seen corresponding path program 6 times [2020-10-14 23:25:22,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:22,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890885033] [2020-10-14 23:25:22,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:22,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:22,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:22,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:23,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:23,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:25:23,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:23,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-14 23:25:23,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:23,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:25:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:23,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-14 23:25:23,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:23,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:23,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:23,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:23,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:23,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:23,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:23,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:23,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:23,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:23,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:23,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:23,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:23,607 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-14 23:25:23,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890885033] [2020-10-14 23:25:23,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:23,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:25:23,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658456891] [2020-10-14 23:25:23,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:25:23,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:23,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:25:23,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:25:23,608 INFO L87 Difference]: Start difference. First operand 174 states and 208 transitions. Second operand 10 states. [2020-10-14 23:25:23,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:23,955 INFO L93 Difference]: Finished difference Result 195 states and 232 transitions. [2020-10-14 23:25:23,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 23:25:23,956 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-10-14 23:25:23,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:23,957 INFO L225 Difference]: With dead ends: 195 [2020-10-14 23:25:23,957 INFO L226 Difference]: Without dead ends: 180 [2020-10-14 23:25:23,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:25:23,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-14 23:25:23,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 173. [2020-10-14 23:25:23,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-14 23:25:23,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 206 transitions. [2020-10-14 23:25:23,977 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 206 transitions. Word has length 38 [2020-10-14 23:25:23,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:23,978 INFO L479 AbstractCegarLoop]: Abstraction has 173 states and 206 transitions. [2020-10-14 23:25:23,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:25:23,978 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 206 transitions. [2020-10-14 23:25:23,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-14 23:25:23,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:23,979 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:23,979 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-14 23:25:23,979 INFO L427 AbstractCegarLoop]: === Iteration 45 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:23,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:23,979 INFO L82 PathProgramCache]: Analyzing trace with hash -2110888150, now seen corresponding path program 12 times [2020-10-14 23:25:23,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:23,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889472902] [2020-10-14 23:25:23,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:24,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:24,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:26,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:26,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:25:26,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:25:26,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2019 [2020-10-14 23:25:26,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:26,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:25:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-14 23:25:26,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:26,671 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 51 [2020-10-14 23:25:26,820 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 54 [2020-10-14 23:25:27,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:27,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:27,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:27,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:27,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:27,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:27,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:27,236 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:27,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:27,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:27,250 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:27,250 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889472902] [2020-10-14 23:25:27,250 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:27,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:25:27,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759169387] [2020-10-14 23:25:27,251 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:25:27,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:27,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:25:27,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=273, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:25:27,251 INFO L87 Difference]: Start difference. First operand 173 states and 206 transitions. Second operand 18 states. [2020-10-14 23:25:28,083 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2020-10-14 23:25:28,355 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 59 [2020-10-14 23:25:28,773 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 57 [2020-10-14 23:25:29,465 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-14 23:25:29,786 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 88 [2020-10-14 23:25:30,082 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 86 [2020-10-14 23:25:30,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:30,349 INFO L93 Difference]: Finished difference Result 270 states and 324 transitions. [2020-10-14 23:25:30,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:25:30,350 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 38 [2020-10-14 23:25:30,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:30,352 INFO L225 Difference]: With dead ends: 270 [2020-10-14 23:25:30,352 INFO L226 Difference]: Without dead ends: 260 [2020-10-14 23:25:30,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=115, Invalid=815, Unknown=0, NotChecked=0, Total=930 [2020-10-14 23:25:30,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-14 23:25:30,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 185. [2020-10-14 23:25:30,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-14 23:25:30,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 221 transitions. [2020-10-14 23:25:30,376 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 221 transitions. Word has length 38 [2020-10-14 23:25:30,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:30,376 INFO L479 AbstractCegarLoop]: Abstraction has 185 states and 221 transitions. [2020-10-14 23:25:30,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:25:30,377 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 221 transitions. [2020-10-14 23:25:30,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:25:30,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:30,377 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:30,378 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-14 23:25:30,378 INFO L427 AbstractCegarLoop]: === Iteration 46 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:30,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:30,378 INFO L82 PathProgramCache]: Analyzing trace with hash -702871682, now seen corresponding path program 8 times [2020-10-14 23:25:30,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:30,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1644491991] [2020-10-14 23:25:30,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:30,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:30,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:31,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:31,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:31,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:25:31,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:31,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1301 [2020-10-14 23:25:31,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:31,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:25:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:31,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:25:31,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:32,181 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 43 [2020-10-14 23:25:32,434 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 48 [2020-10-14 23:25:32,790 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 59 [2020-10-14 23:25:33,216 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 63 [2020-10-14 23:25:33,383 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2020-10-14 23:25:33,524 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-14 23:25:33,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:33,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:33,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:33,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:33,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:33,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:33,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:33,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:33,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:33,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:33,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1644491991] [2020-10-14 23:25:33,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:33,875 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:25:33,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559119150] [2020-10-14 23:25:33,876 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:25:33,876 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:33,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:25:33,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:25:33,890 INFO L87 Difference]: Start difference. First operand 185 states and 221 transitions. Second operand 18 states. [2020-10-14 23:25:34,271 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2020-10-14 23:25:34,646 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 66 [2020-10-14 23:25:35,012 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 75 [2020-10-14 23:25:35,357 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-10-14 23:25:35,525 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 60 [2020-10-14 23:25:35,890 WARN L193 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 70 [2020-10-14 23:25:36,480 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2020-10-14 23:25:36,905 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 87 [2020-10-14 23:25:37,246 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2020-10-14 23:25:37,746 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-14 23:25:38,109 WARN L193 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 77 [2020-10-14 23:25:38,527 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 112 [2020-10-14 23:25:38,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:38,868 INFO L93 Difference]: Finished difference Result 252 states and 302 transitions. [2020-10-14 23:25:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-14 23:25:38,868 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 39 [2020-10-14 23:25:38,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:38,870 INFO L225 Difference]: With dead ends: 252 [2020-10-14 23:25:38,870 INFO L226 Difference]: Without dead ends: 243 [2020-10-14 23:25:38,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=228, Invalid=1494, Unknown=0, NotChecked=0, Total=1722 [2020-10-14 23:25:38,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2020-10-14 23:25:38,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 196. [2020-10-14 23:25:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-14 23:25:38,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 233 transitions. [2020-10-14 23:25:38,902 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 233 transitions. Word has length 39 [2020-10-14 23:25:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:38,902 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 233 transitions. [2020-10-14 23:25:38,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:25:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 233 transitions. [2020-10-14 23:25:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:25:38,903 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:38,903 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:38,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-14 23:25:38,903 INFO L427 AbstractCegarLoop]: === Iteration 47 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:38,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:38,904 INFO L82 PathProgramCache]: Analyzing trace with hash 581800578, now seen corresponding path program 13 times [2020-10-14 23:25:38,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:38,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511824068] [2020-10-14 23:25:38,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:38,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:39,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:40,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:40,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:40,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:25:40,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1739 [2020-10-14 23:25:40,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:40,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-14 23:25:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:25:40,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:41,213 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 59 [2020-10-14 23:25:41,395 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 67 [2020-10-14 23:25:41,588 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2020-10-14 23:25:41,738 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 63 [2020-10-14 23:25:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:42,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:42,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:42,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:42,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:42,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:42,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:42,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:42,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:42,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:42,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:42,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:42,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:42,178 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:42,178 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511824068] [2020-10-14 23:25:42,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:42,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:25:42,178 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629698047] [2020-10-14 23:25:42,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:25:42,179 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:42,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:25:42,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:25:42,179 INFO L87 Difference]: Start difference. First operand 196 states and 233 transitions. Second operand 20 states. [2020-10-14 23:25:43,917 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-14 23:25:44,426 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-14 23:25:45,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:45,361 INFO L93 Difference]: Finished difference Result 338 states and 405 transitions. [2020-10-14 23:25:45,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-14 23:25:45,362 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 39 [2020-10-14 23:25:45,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:45,364 INFO L225 Difference]: With dead ends: 338 [2020-10-14 23:25:45,364 INFO L226 Difference]: Without dead ends: 328 [2020-10-14 23:25:45,365 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=122, Invalid=1138, Unknown=0, NotChecked=0, Total=1260 [2020-10-14 23:25:45,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-14 23:25:45,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 197. [2020-10-14 23:25:45,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-14 23:25:45,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 234 transitions. [2020-10-14 23:25:45,388 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 234 transitions. Word has length 39 [2020-10-14 23:25:45,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:45,388 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 234 transitions. [2020-10-14 23:25:45,388 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:25:45,388 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 234 transitions. [2020-10-14 23:25:45,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:25:45,389 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:45,389 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:25:45,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-14 23:25:45,389 INFO L427 AbstractCegarLoop]: === Iteration 48 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:45,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:45,389 INFO L82 PathProgramCache]: Analyzing trace with hash 794734805, now seen corresponding path program 7 times [2020-10-14 23:25:45,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:45,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640742613] [2020-10-14 23:25:45,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:45,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:45,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:45,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:45,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:45,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:46,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:46,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:46,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:47,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:47,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:25:47,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-14 23:25:47,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2029 [2020-10-14 23:25:47,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:47,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:47,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:25:47,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:47,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:25:47,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:47,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:47,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:47,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:47,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:47,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:47,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:47,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:47,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:47,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:47,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:47,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:47,585 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:47,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640742613] [2020-10-14 23:25:47,585 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:47,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:25:47,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378285825] [2020-10-14 23:25:47,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:25:47,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:47,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:25:47,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:25:47,586 INFO L87 Difference]: Start difference. First operand 197 states and 234 transitions. Second operand 12 states. [2020-10-14 23:25:48,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:48,187 INFO L93 Difference]: Finished difference Result 235 states and 279 transitions. [2020-10-14 23:25:48,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:25:48,188 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-14 23:25:48,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:48,190 INFO L225 Difference]: With dead ends: 235 [2020-10-14 23:25:48,190 INFO L226 Difference]: Without dead ends: 217 [2020-10-14 23:25:48,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=122, Invalid=430, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:25:48,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-14 23:25:48,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 208. [2020-10-14 23:25:48,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-14 23:25:48,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 247 transitions. [2020-10-14 23:25:48,219 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 247 transitions. Word has length 40 [2020-10-14 23:25:48,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:48,219 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 247 transitions. [2020-10-14 23:25:48,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:25:48,219 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 247 transitions. [2020-10-14 23:25:48,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:25:48,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:48,220 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:25:48,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-14 23:25:48,221 INFO L427 AbstractCegarLoop]: === Iteration 49 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:48,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:48,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1474793175, now seen corresponding path program 9 times [2020-10-14 23:25:48,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:48,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993404942] [2020-10-14 23:25:48,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:48,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:48,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:48,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:48,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:25:48,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:48,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 463 [2020-10-14 23:25:48,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:48,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:25:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:48,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-14 23:25:48,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:48,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:48,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:48,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:48,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:48,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:48,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:48,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:48,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:48,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:48,862 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:25:48,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993404942] [2020-10-14 23:25:48,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:48,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:25:48,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537359505] [2020-10-14 23:25:48,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:25:48,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:48,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:25:48,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:25:48,863 INFO L87 Difference]: Start difference. First operand 208 states and 247 transitions. Second operand 10 states. [2020-10-14 23:25:49,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:49,353 INFO L93 Difference]: Finished difference Result 233 states and 278 transitions. [2020-10-14 23:25:49,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:25:49,354 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-14 23:25:49,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:49,355 INFO L225 Difference]: With dead ends: 233 [2020-10-14 23:25:49,356 INFO L226 Difference]: Without dead ends: 210 [2020-10-14 23:25:49,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:49,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-10-14 23:25:49,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 208. [2020-10-14 23:25:49,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-14 23:25:49,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 246 transitions. [2020-10-14 23:25:49,382 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 246 transitions. Word has length 40 [2020-10-14 23:25:49,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:49,382 INFO L479 AbstractCegarLoop]: Abstraction has 208 states and 246 transitions. [2020-10-14 23:25:49,382 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:25:49,382 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 246 transitions. [2020-10-14 23:25:49,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:25:49,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:49,383 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:49,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-14 23:25:49,383 INFO L427 AbstractCegarLoop]: === Iteration 50 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:49,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:49,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1280638126, now seen corresponding path program 10 times [2020-10-14 23:25:49,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:49,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1201177764] [2020-10-14 23:25:49,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:49,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:50,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:50,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:25:50,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:50,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-10-14 23:25:50,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:50,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:25:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:50,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:25:50,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:50,505 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2020-10-14 23:25:50,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:50,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:50,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:50,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:50,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:50,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:50,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:50,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:50,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:50,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:50,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:50,812 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:50,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1201177764] [2020-10-14 23:25:50,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:50,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:25:50,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106587667] [2020-10-14 23:25:50,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:25:50,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:50,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:25:50,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:25:50,814 INFO L87 Difference]: Start difference. First operand 208 states and 246 transitions. Second operand 16 states. [2020-10-14 23:25:51,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:51,990 INFO L93 Difference]: Finished difference Result 241 states and 285 transitions. [2020-10-14 23:25:51,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:25:51,990 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2020-10-14 23:25:51,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:51,992 INFO L225 Difference]: With dead ends: 241 [2020-10-14 23:25:51,992 INFO L226 Difference]: Without dead ends: 229 [2020-10-14 23:25:51,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:25:51,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2020-10-14 23:25:52,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 203. [2020-10-14 23:25:52,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-10-14 23:25:52,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 241 transitions. [2020-10-14 23:25:52,018 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 241 transitions. Word has length 40 [2020-10-14 23:25:52,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:52,018 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 241 transitions. [2020-10-14 23:25:52,018 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:25:52,018 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 241 transitions. [2020-10-14 23:25:52,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:25:52,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:52,019 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:52,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-14 23:25:52,019 INFO L427 AbstractCegarLoop]: === Iteration 51 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:52,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:52,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1931493556, now seen corresponding path program 2 times [2020-10-14 23:25:52,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:52,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [863697238] [2020-10-14 23:25:52,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:52,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:52,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:52,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:52,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:53,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:53,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:25:53,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:25:53,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1646 [2020-10-14 23:25:53,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:53,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:53,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:25:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:53,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:25:53,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:54,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:54,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:54,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:54,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:54,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:54,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:54,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:54,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:54,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:54,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 3 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:54,394 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [863697238] [2020-10-14 23:25:54,394 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:54,394 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:25:54,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071679854] [2020-10-14 23:25:54,395 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:25:54,395 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:54,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:25:54,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:25:54,395 INFO L87 Difference]: Start difference. First operand 203 states and 241 transitions. Second operand 17 states. [2020-10-14 23:25:55,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:55,723 INFO L93 Difference]: Finished difference Result 250 states and 294 transitions. [2020-10-14 23:25:55,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:25:55,724 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-10-14 23:25:55,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:55,726 INFO L225 Difference]: With dead ends: 250 [2020-10-14 23:25:55,726 INFO L226 Difference]: Without dead ends: 240 [2020-10-14 23:25:55,727 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:25:55,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-14 23:25:55,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 220. [2020-10-14 23:25:55,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220 states. [2020-10-14 23:25:55,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 258 transitions. [2020-10-14 23:25:55,764 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 258 transitions. Word has length 40 [2020-10-14 23:25:55,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:55,764 INFO L479 AbstractCegarLoop]: Abstraction has 220 states and 258 transitions. [2020-10-14 23:25:55,764 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:25:55,764 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 258 transitions. [2020-10-14 23:25:55,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:25:55,765 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:55,765 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:55,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-14 23:25:55,766 INFO L427 AbstractCegarLoop]: === Iteration 52 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:55,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:55,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1988751858, now seen corresponding path program 2 times [2020-10-14 23:25:55,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:55,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1820706058] [2020-10-14 23:25:55,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:55,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:55,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:56,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:56,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:25:56,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:25:56,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 842 [2020-10-14 23:25:56,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:56,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:25:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:56,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:25:56,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:25:57,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:25:57,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:57,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:57,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:57,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:25:57,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:57,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:25:57,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:57,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:25:57,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:25:57,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:25:57,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:25:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 1 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:25:57,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1820706058] [2020-10-14 23:25:57,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:25:57,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:25:57,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754758400] [2020-10-14 23:25:57,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:25:57,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:25:57,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:25:57,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:25:57,297 INFO L87 Difference]: Start difference. First operand 220 states and 258 transitions. Second operand 18 states. [2020-10-14 23:25:58,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:25:58,584 INFO L93 Difference]: Finished difference Result 257 states and 301 transitions. [2020-10-14 23:25:58,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:25:58,584 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-10-14 23:25:58,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:25:58,586 INFO L225 Difference]: With dead ends: 257 [2020-10-14 23:25:58,586 INFO L226 Difference]: Without dead ends: 247 [2020-10-14 23:25:58,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=110, Invalid=760, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:25:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2020-10-14 23:25:58,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 221. [2020-10-14 23:25:58,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-14 23:25:58,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 259 transitions. [2020-10-14 23:25:58,612 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 259 transitions. Word has length 40 [2020-10-14 23:25:58,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:25:58,612 INFO L479 AbstractCegarLoop]: Abstraction has 221 states and 259 transitions. [2020-10-14 23:25:58,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:25:58,612 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 259 transitions. [2020-10-14 23:25:58,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:25:58,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:25:58,613 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:25:58,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-14 23:25:58,613 INFO L427 AbstractCegarLoop]: === Iteration 53 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:25:58,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:25:58,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1844194774, now seen corresponding path program 14 times [2020-10-14 23:25:58,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:25:58,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [464772264] [2020-10-14 23:25:58,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:25:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:25:58,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:25:59,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:25:59,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:25:59,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:25:59,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-10-14 23:25:59,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:25:59,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:25:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:25:59,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:25:59,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:25:59,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:00,236 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 62 [2020-10-14 23:26:00,440 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 71 [2020-10-14 23:26:00,681 WARN L193 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 75 [2020-10-14 23:26:01,044 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 81 [2020-10-14 23:26:01,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:01,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:01,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:01,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:01,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:01,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:01,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:01,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:01,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:01,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:01,659 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 10 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:01,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [464772264] [2020-10-14 23:26:01,659 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:01,659 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-14 23:26:01,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529681961] [2020-10-14 23:26:01,659 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-14 23:26:01,660 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:01,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-14 23:26:01,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:26:01,660 INFO L87 Difference]: Start difference. First operand 221 states and 259 transitions. Second operand 19 states. [2020-10-14 23:26:02,624 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 63 [2020-10-14 23:26:02,962 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 80 [2020-10-14 23:26:03,222 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 78 [2020-10-14 23:26:03,674 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 83 [2020-10-14 23:26:04,156 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-10-14 23:26:04,882 WARN L193 SmtUtils]: Spent 439.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 91 [2020-10-14 23:26:05,588 WARN L193 SmtUtils]: Spent 577.00 ms on a formula simplification. DAG size of input: 250 DAG size of output: 142 [2020-10-14 23:26:05,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:05,810 INFO L93 Difference]: Finished difference Result 267 states and 314 transitions. [2020-10-14 23:26:05,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:26:05,810 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 40 [2020-10-14 23:26:05,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:05,811 INFO L225 Difference]: With dead ends: 267 [2020-10-14 23:26:05,811 INFO L226 Difference]: Without dead ends: 255 [2020-10-14 23:26:05,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2020-10-14 23:26:05,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-14 23:26:05,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 215. [2020-10-14 23:26:05,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-14 23:26:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 252 transitions. [2020-10-14 23:26:05,837 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 252 transitions. Word has length 40 [2020-10-14 23:26:05,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:05,837 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 252 transitions. [2020-10-14 23:26:05,838 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-14 23:26:05,838 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 252 transitions. [2020-10-14 23:26:05,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-14 23:26:05,838 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:05,838 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:05,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-14 23:26:05,839 INFO L427 AbstractCegarLoop]: === Iteration 54 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:05,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:05,839 INFO L82 PathProgramCache]: Analyzing trace with hash -1413829041, now seen corresponding path program 15 times [2020-10-14 23:26:05,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:05,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1379298000] [2020-10-14 23:26:05,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:05,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:05,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:07,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:08,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:09,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:09,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-14 23:26:09,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:26:09,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3860 [2020-10-14 23:26:09,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:09,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:26:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:09,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-14 23:26:09,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:10,249 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 61 [2020-10-14 23:26:10,426 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2020-10-14 23:26:11,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:11,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:11,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:11,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:11,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:11,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:11,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:11,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:11,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:11,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:11,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:11,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:11,035 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:11,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1379298000] [2020-10-14 23:26:11,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:11,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:26:11,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963686351] [2020-10-14 23:26:11,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:26:11,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:11,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:26:11,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:26:11,037 INFO L87 Difference]: Start difference. First operand 215 states and 252 transitions. Second operand 17 states. [2020-10-14 23:26:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:13,155 INFO L93 Difference]: Finished difference Result 275 states and 322 transitions. [2020-10-14 23:26:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:26:13,155 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 40 [2020-10-14 23:26:13,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:13,157 INFO L225 Difference]: With dead ends: 275 [2020-10-14 23:26:13,157 INFO L226 Difference]: Without dead ends: 264 [2020-10-14 23:26:13,158 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=95, Invalid=775, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:26:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-14 23:26:13,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 216. [2020-10-14 23:26:13,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 216 states. [2020-10-14 23:26:13,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 216 states to 216 states and 253 transitions. [2020-10-14 23:26:13,189 INFO L78 Accepts]: Start accepts. Automaton has 216 states and 253 transitions. Word has length 40 [2020-10-14 23:26:13,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:13,190 INFO L479 AbstractCegarLoop]: Abstraction has 216 states and 253 transitions. [2020-10-14 23:26:13,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:26:13,190 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states and 253 transitions. [2020-10-14 23:26:13,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:26:13,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:13,191 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:26:13,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-14 23:26:13,191 INFO L427 AbstractCegarLoop]: === Iteration 55 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:13,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:13,191 INFO L82 PathProgramCache]: Analyzing trace with hash 170153824, now seen corresponding path program 1 times [2020-10-14 23:26:13,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:13,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [536893085] [2020-10-14 23:26:13,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:13,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:13,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:14,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:14,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:26:14,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:26:14,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 880 [2020-10-14 23:26:14,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:14,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:14,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:14,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-14 23:26:14,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:14,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:14,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:14,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:14,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:14,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:14,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-14 23:26:14,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:14,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:14,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:14,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:14,681 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:14,682 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [536893085] [2020-10-14 23:26:14,682 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:14,682 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:26:14,682 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986361307] [2020-10-14 23:26:14,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:26:14,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:14,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:26:14,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:26:14,683 INFO L87 Difference]: Start difference. First operand 216 states and 253 transitions. Second operand 16 states. [2020-10-14 23:26:14,829 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2020-10-14 23:26:15,032 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 68 [2020-10-14 23:26:15,252 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 75 [2020-10-14 23:26:16,033 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 74 [2020-10-14 23:26:16,551 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2020-10-14 23:26:16,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:16,847 INFO L93 Difference]: Finished difference Result 270 states and 316 transitions. [2020-10-14 23:26:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:26:16,847 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 41 [2020-10-14 23:26:16,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:16,849 INFO L225 Difference]: With dead ends: 270 [2020-10-14 23:26:16,849 INFO L226 Difference]: Without dead ends: 260 [2020-10-14 23:26:16,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:26:16,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-14 23:26:16,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 236. [2020-10-14 23:26:16,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-14 23:26:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 277 transitions. [2020-10-14 23:26:16,884 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 277 transitions. Word has length 41 [2020-10-14 23:26:16,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:16,884 INFO L479 AbstractCegarLoop]: Abstraction has 236 states and 277 transitions. [2020-10-14 23:26:16,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:26:16,885 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 277 transitions. [2020-10-14 23:26:16,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:26:16,886 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:16,886 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:26:16,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-14 23:26:16,886 INFO L427 AbstractCegarLoop]: === Iteration 56 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:16,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:16,886 INFO L82 PathProgramCache]: Analyzing trace with hash 227412126, now seen corresponding path program 1 times [2020-10-14 23:26:16,887 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:16,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [275929469] [2020-10-14 23:26:16,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:16,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:16,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:16,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:17,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:17,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:17,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:18,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:18,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:20,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:20,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:26:20,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-14 23:26:20,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3891 [2020-10-14 23:26:20,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:20,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:20,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:20,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:20,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:26:20,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:21,225 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:21,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:21,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:21,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:21,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:21,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:21,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:26:21,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:21,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:21,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:21,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:21,239 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:21,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [275929469] [2020-10-14 23:26:21,239 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:21,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:26:21,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657255745] [2020-10-14 23:26:21,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:26:21,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:21,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:26:21,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:26:21,240 INFO L87 Difference]: Start difference. First operand 236 states and 277 transitions. Second operand 13 states. [2020-10-14 23:26:21,500 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2020-10-14 23:26:22,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:22,467 INFO L93 Difference]: Finished difference Result 266 states and 311 transitions. [2020-10-14 23:26:22,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:26:22,467 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-14 23:26:22,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:22,469 INFO L225 Difference]: With dead ends: 266 [2020-10-14 23:26:22,470 INFO L226 Difference]: Without dead ends: 245 [2020-10-14 23:26:22,470 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=85, Invalid=467, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:26:22,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-10-14 23:26:22,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 228. [2020-10-14 23:26:22,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-14 23:26:22,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 265 transitions. [2020-10-14 23:26:22,499 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 265 transitions. Word has length 41 [2020-10-14 23:26:22,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:22,499 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 265 transitions. [2020-10-14 23:26:22,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:26:22,500 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 265 transitions. [2020-10-14 23:26:22,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:26:22,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:22,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:22,501 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-14 23:26:22,501 INFO L427 AbstractCegarLoop]: === Iteration 57 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:22,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:22,501 INFO L82 PathProgramCache]: Analyzing trace with hash 461798967, now seen corresponding path program 8 times [2020-10-14 23:26:22,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:22,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [962000332] [2020-10-14 23:26:22,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:22,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:22,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:22,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:23,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:23,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:23,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:26:23,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:26:23,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1425 [2020-10-14 23:26:23,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:23,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:23,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:26:23,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:23,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:26:23,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:24,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:24,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:24,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:24,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:24,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:24,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:24,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:24,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:24,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:24,279 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:24,280 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [962000332] [2020-10-14 23:26:24,280 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:24,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:26:24,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784940072] [2020-10-14 23:26:24,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:26:24,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:24,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:26:24,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:26:24,281 INFO L87 Difference]: Start difference. First operand 228 states and 265 transitions. Second operand 14 states. [2020-10-14 23:26:25,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:25,323 INFO L93 Difference]: Finished difference Result 243 states and 283 transitions. [2020-10-14 23:26:25,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:26:25,324 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 41 [2020-10-14 23:26:25,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:25,326 INFO L225 Difference]: With dead ends: 243 [2020-10-14 23:26:25,326 INFO L226 Difference]: Without dead ends: 232 [2020-10-14 23:26:25,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2020-10-14 23:26:25,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2020-10-14 23:26:25,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 228. [2020-10-14 23:26:25,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-10-14 23:26:25,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 265 transitions. [2020-10-14 23:26:25,354 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 265 transitions. Word has length 41 [2020-10-14 23:26:25,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:25,354 INFO L479 AbstractCegarLoop]: Abstraction has 228 states and 265 transitions. [2020-10-14 23:26:25,354 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:26:25,354 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 265 transitions. [2020-10-14 23:26:25,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:26:25,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:25,355 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 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] [2020-10-14 23:26:25,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-14 23:26:25,355 INFO L427 AbstractCegarLoop]: === Iteration 58 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:25,356 INFO L82 PathProgramCache]: Analyzing trace with hash -568875783, now seen corresponding path program 11 times [2020-10-14 23:26:25,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:25,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26240407] [2020-10-14 23:26:25,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:25,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:26,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:27,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:27,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:27,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2520 [2020-10-14 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:26:27,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:28,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:28,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:28,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:28,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:28,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:28,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:28,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:28,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:28,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:28,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:28,776 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:28,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26240407] [2020-10-14 23:26:28,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:28,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:26:28,776 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687440577] [2020-10-14 23:26:28,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:26:28,777 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:28,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:26:28,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:26:28,777 INFO L87 Difference]: Start difference. First operand 228 states and 265 transitions. Second operand 17 states. [2020-10-14 23:26:30,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:30,364 INFO L93 Difference]: Finished difference Result 304 states and 357 transitions. [2020-10-14 23:26:30,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:26:30,365 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 41 [2020-10-14 23:26:30,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:30,367 INFO L225 Difference]: With dead ends: 304 [2020-10-14 23:26:30,367 INFO L226 Difference]: Without dead ends: 293 [2020-10-14 23:26:30,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=102, Invalid=710, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:26:30,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-10-14 23:26:30,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 239. [2020-10-14 23:26:30,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-14 23:26:30,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 278 transitions. [2020-10-14 23:26:30,407 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 278 transitions. Word has length 41 [2020-10-14 23:26:30,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:30,407 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 278 transitions. [2020-10-14 23:26:30,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:26:30,407 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 278 transitions. [2020-10-14 23:26:30,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:26:30,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:30,408 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:30,408 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2020-10-14 23:26:30,408 INFO L427 AbstractCegarLoop]: === Iteration 59 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:30,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:30,408 INFO L82 PathProgramCache]: Analyzing trace with hash 715796477, now seen corresponding path program 16 times [2020-10-14 23:26:30,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:30,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068616748] [2020-10-14 23:26:30,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:30,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:31,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:32,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:33,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:33,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:26:33,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:26:33,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3090 [2020-10-14 23:26:33,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:33,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:33,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:26:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:33,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:26:33,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:34,169 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2020-10-14 23:26:34,427 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 79 [2020-10-14 23:26:34,592 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 59 [2020-10-14 23:26:34,828 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 65 [2020-10-14 23:26:35,065 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 69 [2020-10-14 23:26:35,241 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2020-10-14 23:26:35,409 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2020-10-14 23:26:35,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:35,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:35,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:35,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:35,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:35,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:35,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:35,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:35,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:35,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:35,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:35,794 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:35,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068616748] [2020-10-14 23:26:35,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:35,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:26:35,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545043991] [2020-10-14 23:26:35,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:26:35,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:35,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:26:35,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=341, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:35,795 INFO L87 Difference]: Start difference. First operand 239 states and 278 transitions. Second operand 20 states. [2020-10-14 23:26:36,654 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 65 [2020-10-14 23:26:36,977 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 85 [2020-10-14 23:26:37,316 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 72 [2020-10-14 23:26:37,743 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 70 [2020-10-14 23:26:38,362 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 73 [2020-10-14 23:26:38,890 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 116 [2020-10-14 23:26:39,414 WARN L193 SmtUtils]: Spent 440.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 114 [2020-10-14 23:26:39,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:39,666 INFO L93 Difference]: Finished difference Result 287 states and 336 transitions. [2020-10-14 23:26:39,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:26:39,667 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 41 [2020-10-14 23:26:39,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:39,668 INFO L225 Difference]: With dead ends: 287 [2020-10-14 23:26:39,668 INFO L226 Difference]: Without dead ends: 276 [2020-10-14 23:26:39,669 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=117, Invalid=875, Unknown=0, NotChecked=0, Total=992 [2020-10-14 23:26:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-14 23:26:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 251. [2020-10-14 23:26:39,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-14 23:26:39,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 293 transitions. [2020-10-14 23:26:39,702 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 293 transitions. Word has length 41 [2020-10-14 23:26:39,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:39,703 INFO L479 AbstractCegarLoop]: Abstraction has 251 states and 293 transitions. [2020-10-14 23:26:39,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:26:39,703 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 293 transitions. [2020-10-14 23:26:39,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:26:39,703 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:39,703 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:26:39,704 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2020-10-14 23:26:39,704 INFO L427 AbstractCegarLoop]: === Iteration 60 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:39,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:39,704 INFO L82 PathProgramCache]: Analyzing trace with hash -1269277419, now seen corresponding path program 9 times [2020-10-14 23:26:39,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:39,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048531682] [2020-10-14 23:26:39,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:39,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:39,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:39,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:39,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:40,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:40,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:26:41,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:26:41,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1471 [2020-10-14 23:26:41,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:26:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:41,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:26:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:41,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:41,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:41,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:41,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:41,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:41,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:41,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:41,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:41,573 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048531682] [2020-10-14 23:26:41,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:41,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:26:41,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711181176] [2020-10-14 23:26:41,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:26:41,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:41,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:26:41,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:26:41,574 INFO L87 Difference]: Start difference. First operand 251 states and 293 transitions. Second operand 14 states. [2020-10-14 23:26:43,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:43,255 INFO L93 Difference]: Finished difference Result 276 states and 323 transitions. [2020-10-14 23:26:43,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-14 23:26:43,256 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-14 23:26:43,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:43,258 INFO L225 Difference]: With dead ends: 276 [2020-10-14 23:26:43,258 INFO L226 Difference]: Without dead ends: 265 [2020-10-14 23:26:43,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=145, Invalid=977, Unknown=0, NotChecked=0, Total=1122 [2020-10-14 23:26:43,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2020-10-14 23:26:43,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 250. [2020-10-14 23:26:43,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-14 23:26:43,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 292 transitions. [2020-10-14 23:26:43,300 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 292 transitions. Word has length 42 [2020-10-14 23:26:43,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:43,300 INFO L479 AbstractCegarLoop]: Abstraction has 250 states and 292 transitions. [2020-10-14 23:26:43,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:26:43,301 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 292 transitions. [2020-10-14 23:26:43,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:26:43,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:43,301 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:43,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2020-10-14 23:26:43,302 INFO L427 AbstractCegarLoop]: === Iteration 61 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:43,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:43,302 INFO L82 PathProgramCache]: Analyzing trace with hash 653640378, now seen corresponding path program 10 times [2020-10-14 23:26:43,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:43,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475140377] [2020-10-14 23:26:43,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:43,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:43,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:43,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:43,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:43,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:45,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:45,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:26:45,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 23:26:45,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1868 [2020-10-14 23:26:45,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:45,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:26:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:45,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-14 23:26:45,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:45,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:45,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:45,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:45,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:45,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:45,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:45,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:45,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:45,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:45,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:45,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 23:26:45,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475140377] [2020-10-14 23:26:45,373 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:45,373 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:26:45,373 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372002507] [2020-10-14 23:26:45,373 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:26:45,373 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:45,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:26:45,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:26:45,374 INFO L87 Difference]: Start difference. First operand 250 states and 292 transitions. Second operand 11 states. [2020-10-14 23:26:45,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:45,877 INFO L93 Difference]: Finished difference Result 280 states and 329 transitions. [2020-10-14 23:26:45,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:26:45,877 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-14 23:26:45,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:45,879 INFO L225 Difference]: With dead ends: 280 [2020-10-14 23:26:45,879 INFO L226 Difference]: Without dead ends: 257 [2020-10-14 23:26:45,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:26:45,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-14 23:26:45,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 254. [2020-10-14 23:26:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-14 23:26:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 296 transitions. [2020-10-14 23:26:45,941 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 296 transitions. Word has length 42 [2020-10-14 23:26:45,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:45,941 INFO L479 AbstractCegarLoop]: Abstraction has 254 states and 296 transitions. [2020-10-14 23:26:45,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:26:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 296 transitions. [2020-10-14 23:26:45,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:26:45,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:45,942 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:45,942 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2020-10-14 23:26:45,942 INFO L427 AbstractCegarLoop]: === Iteration 62 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:45,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:45,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1333698748, now seen corresponding path program 12 times [2020-10-14 23:26:45,943 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:45,943 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311629677] [2020-10-14 23:26:45,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:45,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:46,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:46,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:46,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:46,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:26:46,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:26:46,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 980 [2020-10-14 23:26:46,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:46,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:26:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:46,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:26:46,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:47,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:47,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:47,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:47,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:47,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:47,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:47,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:47,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:47,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:47,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:47,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:47,307 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:47,307 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311629677] [2020-10-14 23:26:47,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:47,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:26:47,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366510934] [2020-10-14 23:26:47,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:26:47,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:47,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:26:47,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:26:47,309 INFO L87 Difference]: Start difference. First operand 254 states and 296 transitions. Second operand 14 states. [2020-10-14 23:26:48,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:48,514 INFO L93 Difference]: Finished difference Result 282 states and 329 transitions. [2020-10-14 23:26:48,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-14 23:26:48,514 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-14 23:26:48,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:48,516 INFO L225 Difference]: With dead ends: 282 [2020-10-14 23:26:48,516 INFO L226 Difference]: Without dead ends: 264 [2020-10-14 23:26:48,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=141, Invalid=561, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:26:48,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-14 23:26:48,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2020-10-14 23:26:48,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-14 23:26:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 297 transitions. [2020-10-14 23:26:48,559 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 297 transitions. Word has length 42 [2020-10-14 23:26:48,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:48,559 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 297 transitions. [2020-10-14 23:26:48,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:26:48,559 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 297 transitions. [2020-10-14 23:26:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:26:48,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:48,560 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-10-14 23:26:48,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2020-10-14 23:26:48,560 INFO L427 AbstractCegarLoop]: === Iteration 63 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:48,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:48,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1139543699, now seen corresponding path program 13 times [2020-10-14 23:26:48,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:48,561 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683393831] [2020-10-14 23:26:48,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:48,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:48,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:49,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:50,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:50,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:26:50,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1899 [2020-10-14 23:26:50,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:50,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:26:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:50,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-14 23:26:50,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:51,004 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-10-14 23:26:51,171 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 51 [2020-10-14 23:26:51,383 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 60 [2020-10-14 23:26:51,640 WARN L193 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 67 [2020-10-14 23:26:51,828 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 61 [2020-10-14 23:26:51,999 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-10-14 23:26:52,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:26:52,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:52,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:52,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:52,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:26:52,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:26:52,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:26:52,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:52,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:52,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:26:52,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:26:52,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:26:52,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:26:52,463 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:26:52,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683393831] [2020-10-14 23:26:52,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:26:52,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:26:52,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230518564] [2020-10-14 23:26:52,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:26:52,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:26:52,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:26:52,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:26:52,464 INFO L87 Difference]: Start difference. First operand 255 states and 297 transitions. Second operand 20 states. [2020-10-14 23:26:52,650 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 66 [2020-10-14 23:26:52,886 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2020-10-14 23:26:53,157 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-10-14 23:26:53,557 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 96 [2020-10-14 23:26:54,036 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 98 [2020-10-14 23:26:55,324 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 100 [2020-10-14 23:26:55,930 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 88 [2020-10-14 23:26:56,450 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 84 [2020-10-14 23:26:56,794 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-14 23:26:56,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:26:56,961 INFO L93 Difference]: Finished difference Result 331 states and 384 transitions. [2020-10-14 23:26:56,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 23:26:56,962 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 42 [2020-10-14 23:26:56,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:26:56,964 INFO L225 Difference]: With dead ends: 331 [2020-10-14 23:26:56,964 INFO L226 Difference]: Without dead ends: 321 [2020-10-14 23:26:56,965 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=183, Invalid=1457, Unknown=0, NotChecked=0, Total=1640 [2020-10-14 23:26:56,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2020-10-14 23:26:57,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 261. [2020-10-14 23:26:57,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 261 states. [2020-10-14 23:26:57,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 304 transitions. [2020-10-14 23:26:57,011 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 304 transitions. Word has length 42 [2020-10-14 23:26:57,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:26:57,011 INFO L479 AbstractCegarLoop]: Abstraction has 261 states and 304 transitions. [2020-10-14 23:26:57,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-14 23:26:57,011 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 304 transitions. [2020-10-14 23:26:57,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-14 23:26:57,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:26:57,012 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:26:57,012 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2020-10-14 23:26:57,012 INFO L427 AbstractCegarLoop]: === Iteration 64 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:26:57,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:26:57,012 INFO L82 PathProgramCache]: Analyzing trace with hash -1985289201, now seen corresponding path program 17 times [2020-10-14 23:26:57,012 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:26:57,013 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792224034] [2020-10-14 23:26:57,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:26:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:26:57,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:59,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:26:59,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:26:59,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-14 23:26:59,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:26:59,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2699 [2020-10-14 23:26:59,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:26:59,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:26:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-14 23:26:59,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:26:59,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:26:59,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:00,241 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 65 [2020-10-14 23:27:00,442 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-10-14 23:27:00,723 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 82 [2020-10-14 23:27:01,082 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 89 [2020-10-14 23:27:01,450 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 97 [2020-10-14 23:27:01,737 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 82 [2020-10-14 23:27:01,998 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-14 23:27:02,171 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 64 [2020-10-14 23:27:02,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:02,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:02,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:02,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:02,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:02,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:02,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:02,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:02,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:02,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:02,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:02,763 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:02,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792224034] [2020-10-14 23:27:02,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:02,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-14 23:27:02,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132698522] [2020-10-14 23:27:02,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-14 23:27:02,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:02,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-14 23:27:02,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=421, Unknown=0, NotChecked=0, Total=462 [2020-10-14 23:27:02,765 INFO L87 Difference]: Start difference. First operand 261 states and 304 transitions. Second operand 22 states. [2020-10-14 23:27:03,147 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 96 [2020-10-14 23:27:04,215 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 76 [2020-10-14 23:27:04,705 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 91 [2020-10-14 23:27:05,351 WARN L193 SmtUtils]: Spent 343.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 99 [2020-10-14 23:27:05,805 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-14 23:27:06,429 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 94 [2020-10-14 23:27:08,108 WARN L193 SmtUtils]: Spent 689.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 112 [2020-10-14 23:27:09,362 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 268 DAG size of output: 189 [2020-10-14 23:27:10,614 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification. DAG size of input: 265 DAG size of output: 185 [2020-10-14 23:27:11,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:11,262 INFO L93 Difference]: Finished difference Result 390 states and 460 transitions. [2020-10-14 23:27:11,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-14 23:27:11,263 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 42 [2020-10-14 23:27:11,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:11,266 INFO L225 Difference]: With dead ends: 390 [2020-10-14 23:27:11,266 INFO L226 Difference]: Without dead ends: 380 [2020-10-14 23:27:11,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=169, Invalid=1723, Unknown=0, NotChecked=0, Total=1892 [2020-10-14 23:27:11,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-10-14 23:27:11,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 262. [2020-10-14 23:27:11,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 262 states. [2020-10-14 23:27:11,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 305 transitions. [2020-10-14 23:27:11,318 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 305 transitions. Word has length 42 [2020-10-14 23:27:11,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:11,318 INFO L479 AbstractCegarLoop]: Abstraction has 262 states and 305 transitions. [2020-10-14 23:27:11,318 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-14 23:27:11,318 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 305 transitions. [2020-10-14 23:27:11,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:27:11,319 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:11,319 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 23:27:11,319 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2020-10-14 23:27:11,319 INFO L427 AbstractCegarLoop]: === Iteration 65 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:11,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:11,320 INFO L82 PathProgramCache]: Analyzing trace with hash 901929463, now seen corresponding path program 11 times [2020-10-14 23:27:11,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:11,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1063747579] [2020-10-14 23:27:11,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:11,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:11,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:11,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:12,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:12,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:27:12,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:27:12,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1021 [2020-10-14 23:27:12,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:12,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:27:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:12,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:27:12,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:13,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:13,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:13,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:13,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:13,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:13,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:13,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:13,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:13,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:13,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:13,216 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:13,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1063747579] [2020-10-14 23:27:13,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:13,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:27:13,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310824949] [2020-10-14 23:27:13,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:27:13,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:13,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:27:13,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:27:13,217 INFO L87 Difference]: Start difference. First operand 262 states and 305 transitions. Second operand 18 states. [2020-10-14 23:27:14,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:14,631 INFO L93 Difference]: Finished difference Result 299 states and 348 transitions. [2020-10-14 23:27:14,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-14 23:27:14,631 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2020-10-14 23:27:14,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:14,633 INFO L225 Difference]: With dead ends: 299 [2020-10-14 23:27:14,633 INFO L226 Difference]: Without dead ends: 297 [2020-10-14 23:27:14,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:27:14,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2020-10-14 23:27:14,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 271. [2020-10-14 23:27:14,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-14 23:27:14,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 316 transitions. [2020-10-14 23:27:14,674 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 316 transitions. Word has length 43 [2020-10-14 23:27:14,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:14,674 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 316 transitions. [2020-10-14 23:27:14,674 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:27:14,674 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 316 transitions. [2020-10-14 23:27:14,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:27:14,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:14,675 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:27:14,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2020-10-14 23:27:14,675 INFO L427 AbstractCegarLoop]: === Iteration 66 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:14,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:14,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1902950823, now seen corresponding path program 1 times [2020-10-14 23:27:14,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:14,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062231655] [2020-10-14 23:27:14,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:14,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:15,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:15,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:15,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:27:15,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:27:15,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-10-14 23:27:15,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:15,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:27:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:15,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-14 23:27:15,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:16,122 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2020-10-14 23:27:16,274 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 37 [2020-10-14 23:27:16,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:16,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:16,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:16,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:16,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:16,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:16,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:16,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:16,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:16,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:16,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062231655] [2020-10-14 23:27:16,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:16,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-14 23:27:16,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812117715] [2020-10-14 23:27:16,533 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-14 23:27:16,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:16,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-14 23:27:16,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2020-10-14 23:27:16,534 INFO L87 Difference]: Start difference. First operand 271 states and 316 transitions. Second operand 18 states. [2020-10-14 23:27:17,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:17,556 INFO L93 Difference]: Finished difference Result 318 states and 372 transitions. [2020-10-14 23:27:17,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:27:17,556 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 43 [2020-10-14 23:27:17,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:17,558 INFO L225 Difference]: With dead ends: 318 [2020-10-14 23:27:17,558 INFO L226 Difference]: Without dead ends: 308 [2020-10-14 23:27:17,558 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=82, Invalid=568, Unknown=0, NotChecked=0, Total=650 [2020-10-14 23:27:17,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-14 23:27:17,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 285. [2020-10-14 23:27:17,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 285 states. [2020-10-14 23:27:17,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 334 transitions. [2020-10-14 23:27:17,602 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 334 transitions. Word has length 43 [2020-10-14 23:27:17,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:17,602 INFO L479 AbstractCegarLoop]: Abstraction has 285 states and 334 transitions. [2020-10-14 23:27:17,602 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-14 23:27:17,602 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 334 transitions. [2020-10-14 23:27:17,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:27:17,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:17,603 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 23:27:17,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2020-10-14 23:27:17,603 INFO L427 AbstractCegarLoop]: === Iteration 67 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:17,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:17,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1845692521, now seen corresponding path program 1 times [2020-10-14 23:27:17,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:17,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575827104] [2020-10-14 23:27:17,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:17,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:17,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:18,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:20,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:20,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:27:20,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 23:27:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2557 [2020-10-14 23:27:20,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:20,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-14 23:27:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:20,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:27:20,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:20,612 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 32 [2020-10-14 23:27:20,869 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 34 [2020-10-14 23:27:21,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:21,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:21,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:21,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:21,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:21,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:21,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:21,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:21,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:21,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:21,220 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:21,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575827104] [2020-10-14 23:27:21,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:21,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-14 23:27:21,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028221119] [2020-10-14 23:27:21,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-14 23:27:21,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:21,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-14 23:27:21,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-14 23:27:21,221 INFO L87 Difference]: Start difference. First operand 285 states and 334 transitions. Second operand 16 states. [2020-10-14 23:27:22,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:22,472 INFO L93 Difference]: Finished difference Result 312 states and 365 transitions. [2020-10-14 23:27:22,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-14 23:27:22,473 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-14 23:27:22,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:22,475 INFO L225 Difference]: With dead ends: 312 [2020-10-14 23:27:22,475 INFO L226 Difference]: Without dead ends: 291 [2020-10-14 23:27:22,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:27:22,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-14 23:27:22,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 265. [2020-10-14 23:27:22,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-14 23:27:22,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 310 transitions. [2020-10-14 23:27:22,523 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 310 transitions. Word has length 43 [2020-10-14 23:27:22,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:22,523 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 310 transitions. [2020-10-14 23:27:22,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-14 23:27:22,523 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 310 transitions. [2020-10-14 23:27:22,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:27:22,524 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:22,524 INFO L422 BasicCegarLoop]: trace histogram [4, 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] [2020-10-14 23:27:22,524 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2020-10-14 23:27:22,524 INFO L427 AbstractCegarLoop]: === Iteration 68 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:22,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:22,524 INFO L82 PathProgramCache]: Analyzing trace with hash -10187984, now seen corresponding path program 14 times [2020-10-14 23:27:22,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:22,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1756200577] [2020-10-14 23:27:22,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:22,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:22,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:22,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:23,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:23,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:23,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:27:23,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 23:27:23,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1125 [2020-10-14 23:27:23,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:23,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-14 23:27:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:23,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:27:23,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:24,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:24,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:24,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:24,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:24,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:24,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:24,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:24,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:24,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:24,141 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:24,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1756200577] [2020-10-14 23:27:24,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:24,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:27:24,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762451029] [2020-10-14 23:27:24,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:27:24,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:24,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:27:24,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:27:24,143 INFO L87 Difference]: Start difference. First operand 265 states and 310 transitions. Second operand 15 states. [2020-10-14 23:27:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:25,349 INFO L93 Difference]: Finished difference Result 286 states and 334 transitions. [2020-10-14 23:27:25,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:27:25,350 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 43 [2020-10-14 23:27:25,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:25,352 INFO L225 Difference]: With dead ends: 286 [2020-10-14 23:27:25,352 INFO L226 Difference]: Without dead ends: 275 [2020-10-14 23:27:25,353 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2020-10-14 23:27:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-14 23:27:25,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 265. [2020-10-14 23:27:25,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2020-10-14 23:27:25,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 310 transitions. [2020-10-14 23:27:25,397 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 310 transitions. Word has length 43 [2020-10-14 23:27:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:25,397 INFO L479 AbstractCegarLoop]: Abstraction has 265 states and 310 transitions. [2020-10-14 23:27:25,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:27:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 310 transitions. [2020-10-14 23:27:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:27:25,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:25,398 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 4, 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] [2020-10-14 23:27:25,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2020-10-14 23:27:25,399 INFO L427 AbstractCegarLoop]: === Iteration 69 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:25,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:25,399 INFO L82 PathProgramCache]: Analyzing trace with hash -1734027207, now seen corresponding path program 15 times [2020-10-14 23:27:25,399 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:25,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1248904485] [2020-10-14 23:27:25,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:25,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:26,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:26,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:27:26,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:26,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 783 [2020-10-14 23:27:26,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:26,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-14 23:27:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:26,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-14 23:27:26,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:26,811 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 51 [2020-10-14 23:27:27,060 WARN L193 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 53 [2020-10-14 23:27:27,226 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2020-10-14 23:27:27,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:27,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:27,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:27,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:27,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:27,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:27,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:27,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:27,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:27,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:27,519 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1248904485] [2020-10-14 23:27:27,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:27,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:27:27,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612958553] [2020-10-14 23:27:27,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:27:27,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:27,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:27:27,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:27:27,520 INFO L87 Difference]: Start difference. First operand 265 states and 310 transitions. Second operand 17 states. [2020-10-14 23:27:28,782 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-10-14 23:27:29,324 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-10-14 23:27:30,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:30,002 INFO L93 Difference]: Finished difference Result 355 states and 421 transitions. [2020-10-14 23:27:30,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-14 23:27:30,003 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 43 [2020-10-14 23:27:30,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:30,004 INFO L225 Difference]: With dead ends: 355 [2020-10-14 23:27:30,005 INFO L226 Difference]: Without dead ends: 314 [2020-10-14 23:27:30,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=100, Invalid=770, Unknown=0, NotChecked=0, Total=870 [2020-10-14 23:27:30,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-10-14 23:27:30,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 272. [2020-10-14 23:27:30,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-10-14 23:27:30,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 321 transitions. [2020-10-14 23:27:30,060 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 321 transitions. Word has length 43 [2020-10-14 23:27:30,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:30,061 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 321 transitions. [2020-10-14 23:27:30,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:27:30,061 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 321 transitions. [2020-10-14 23:27:30,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:27:30,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:30,062 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-10-14 23:27:30,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2020-10-14 23:27:30,062 INFO L427 AbstractCegarLoop]: === Iteration 70 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:30,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:30,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1677549723, now seen corresponding path program 3 times [2020-10-14 23:27:30,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:30,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084062698] [2020-10-14 23:27:30,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:30,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:30,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:31,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:31,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:31,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:33,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:33,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:27:33,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 23:27:33,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3019 [2020-10-14 23:27:33,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:33,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:33,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-14 23:27:33,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:33,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-14 23:27:33,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:33,423 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-10-14 23:27:33,661 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2020-10-14 23:27:34,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:34,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:34,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:34,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:34,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:34,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:34,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:34,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:34,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:34,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:34,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:34,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084062698] [2020-10-14 23:27:34,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:34,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:27:34,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604275312] [2020-10-14 23:27:34,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:27:34,070 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:34,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:27:34,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:27:34,071 INFO L87 Difference]: Start difference. First operand 272 states and 321 transitions. Second operand 17 states. [2020-10-14 23:27:36,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:27:36,070 INFO L93 Difference]: Finished difference Result 332 states and 389 transitions. [2020-10-14 23:27:36,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:27:36,071 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 43 [2020-10-14 23:27:36,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:27:36,072 INFO L225 Difference]: With dead ends: 332 [2020-10-14 23:27:36,072 INFO L226 Difference]: Without dead ends: 322 [2020-10-14 23:27:36,073 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2020-10-14 23:27:36,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2020-10-14 23:27:36,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 290. [2020-10-14 23:27:36,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 290 states. [2020-10-14 23:27:36,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 339 transitions. [2020-10-14 23:27:36,124 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 339 transitions. Word has length 43 [2020-10-14 23:27:36,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:27:36,124 INFO L479 AbstractCegarLoop]: Abstraction has 290 states and 339 transitions. [2020-10-14 23:27:36,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:27:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 339 transitions. [2020-10-14 23:27:36,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:27:36,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:27:36,125 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-10-14 23:27:36,125 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2020-10-14 23:27:36,125 INFO L427 AbstractCegarLoop]: === Iteration 71 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:27:36,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:27:36,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1734808025, now seen corresponding path program 3 times [2020-10-14 23:27:36,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:27:36,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946196125] [2020-10-14 23:27:36,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:27:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:36,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:37,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:37,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:37,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:27:37,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:27:37,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1625 [2020-10-14 23:27:37,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:37,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-14 23:27:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 23:27:37,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-14 23:27:37,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:38,337 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 57 [2020-10-14 23:27:38,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:27:38,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:27:38,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:27:38,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:27:38,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:27:38,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:27:38,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:27:38,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:27:38,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:27:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:27:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:27:38,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:27:38,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:27:38,751 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 1 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 23:27:38,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946196125] [2020-10-14 23:27:38,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:27:38,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-14 23:27:38,752 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387918519] [2020-10-14 23:27:38,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-14 23:27:38,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:27:38,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-14 23:27:38,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2020-10-14 23:27:38,752 INFO L87 Difference]: Start difference. First operand 290 states and 339 transitions. Second operand 20 states.